description: You are given two strings s and t, both consisting of lowercase English letters. You are going to type the string s character by character, from the first character to the last one.
  
  When typing a character, instead of pressing the button corresponding to it, you can press the "Backspace" button. It deletes the last character you have typed among those that aren't deleted yet (or does nothing if there are no characters in the current string). For example, if s is "abcbd" and you press Backspace instead of typing the first and the fourth characters, you will get the string "bd" (the first press of Backspace deletes no character, and the second press deletes the character 'c'). Another example, if s is "abcaa" and you press Backspace instead of the last two letters, then the resulting text is "a".
  
  Your task is to determine whether you can obtain the string t, if you type the string s and press "Backspace" instead of typing several (maybe zero) characters of s.
  
  Input
  
  The first line contains a single integer q (1 ≤ q ≤ 10^5) — the number of test cases.
  
  The first line of each test case contains the string s (1 ≤ |s| ≤ 10^5). Each character of s is a lowercase English letter.
  
  The second line of each test case contains the string t (1 ≤ |t| ≤ 10^5). Each character of t is a lowercase English letter.
  
  It is guaranteed that the total number of characters in the strings over all test cases does not exceed 2 ⋅ 10^5.
  
  Output
  
  For each test case, print "YES" if you can obtain the string t by typing the string s and replacing some characters with presses of "Backspace" button, or "NO" if you cannot.
  
  You may print each letter in any case (YES, yes, Yes will all be recognized as positive answer, NO, no and nO will all be recognized as negative answer).
  
  Example
  
  Input
  
  
  4
  ababa
  ba
  ababa
  bb
  aaa
  aaaa
  aababa
  ababa
  
  
  Output
  
  
  YES
  NO
  NO
  YES
  
  Note
  
  Consider the example test from the statement.
  
  In order to obtain "ba" from "ababa", you may press Backspace instead of typing the first and the fourth characters.
  
  There's no way to obtain "bb" while typing "ababa".
  
  There's no way to obtain "aaaa" while typing "aaa".
  
  In order to obtain "ababa" while typing "aababa", you have to press Backspace instead of typing the first character, then type all the remaining characters.
solution: import static java.lang.Math.max;
  import static java.lang.Math.min;
  import static java.lang.Math.abs;
  import java.util.*;
  import java.io.*;
  import java.math.*;
  
  /**
   *
   * @Har_Har_Mahadev
   */
  
  /**
   * Main , Solution , Remove Public
   */
  public class D {
  
  	public static void process() throws IOException {
  
  		Stack<Character> s1 = new Stack<Character>();
  		Stack<Character> s2 = new Stack<Character>();
  		String s = sc.next(),t = sc.next();
  		for(char e : s.toCharArray())s1.add(e);
  		for(char e : t.toCharArray())s2.add(e);
  		while(!s2.isEmpty() && !s1.isEmpty()) {
  			if(s1.peek() == s2.peek()) {
  				s1.pop();
  				s2.pop();
  				continue;
  			}
  			s1.pop();
  			if(!s1.isEmpty())s1.pop();
  		}
  		if(s2.isEmpty()) {
  			out.println("YES");
  		}
  		else out.println("NO");
  
  	}
  
  	//=============================================================================
  	//--------------------------The End---------------------------------
  	//=============================================================================
  	private static long INF = 2000000000000000000L, M = 1000000007, MM = 998244353;
  	private static int N = 0;
  
  	private static void google(int tt) {
  		System.out.print("Case #" + (tt) + ": ");
  	}
  
  	static FastScanner sc;
  	static FastWriter out;
  
  	public static void main(String[] args) throws IOException {
  		boolean oj = true;
  		if (oj) {
  			sc = new FastScanner();
  			out = new FastWriter(System.out);
  		} else {
  			sc = new FastScanner("input.txt");
  			out = new FastWriter("output.txt");
  		}
  		long s = System.currentTimeMillis();
  		int t = 1;
  		t = sc.nextInt();
  		int TTT = 1;
  		while (t-- > 0) {
  			//			google(TTT++);
  			process();
  		}
  		out.flush();
  		//		tr(System.currentTimeMillis()-s+"ms");
  	}
  
  	private static boolean oj = System.getProperty("ONLINE_JUDGE") != null;
  
  	private static void tr(Object... o) {
  		if (!oj)
  			System.err.println(Arrays.deepToString(o));
  	}
  
  	static class Pair implements Comparable<Pair> {
  		int x, y;
  
  		Pair(int x, int y) {
  			this.x = x;
  			this.y = y;
  		}
  
  		@Override
  		public int compareTo(Pair o) {
  			return Integer.compare(this.x, o.x);
  		}
  
  		/*
  		 	@Override
  		    public boolean equals(Object o) {
  		        if (this == o) return true;
  		        if (!(o instanceof Pair)) return false;
  		        Pair key = (Pair) o;
  		        return x == key.x && y == key.y;
  		    }
  		 
  		    @Override
  		    public int hashCode() {
  		        int result = x;
  		        result = 31 * result + y;
  		        return result;
  		    }
  		*/
  	}
  
  	/////////////////////////////////////////////////////////////////////////////////////////////////////////
  
  	static int ceil(int x, int y) {
  		return (x % y == 0 ? x / y : (x / y + 1));
  	}
  
  	static long ceil(long x, long y) {
  		return (x % y == 0 ? x / y : (x / y + 1));
  	}
  
  	static long sqrt(long z) {
  		long sqz = (long) Math.sqrt(z);
  		while (sqz * 1L * sqz < z) {
  			sqz++;
  		}
  		while (sqz * 1L * sqz > z) {
  			sqz--;
  		}
  		return sqz;
  	}
  
  	static int log2(int N) {
  		int result = (int) (Math.log(N) / Math.log(2));
  		return result;
  	}
  
  	public static long gcd(long a, long b) {
  		if (a > b)
  			a = (a + b) - (b = a);
  		if (a == 0L)
  			return b;
  		return gcd(b % a, a);
  	}
  
  	public static long lcm(long a, long b) {
  		return (a * b) / gcd(a, b);
  	}
  
  	public static int lower_bound(int[] arr, int x) {
  		int low = 0, high = arr.length - 1, mid = -1;
  		int ans = -1;
  		while (low <= high) {
  			mid = (low + high) / 2;
  
  			if (arr[mid] > x) {
  				high = mid - 1;
  			} else {
  				ans = mid;
  				low = mid + 1;
  			}
  		}
  
  		return ans;
  	}
  
  	public static int upper_bound(int[] arr, int x) {
  		int low = 0, high = arr.length - 1, mid = -1;
  		int ans = arr.length;
  		while (low < high) {
  			mid = (low + high) / 2;
  
  			if (arr[mid] >= x) {
  				ans = mid;
  				high = mid - 1;
  			} else {
  				low = mid + 1;
  			}
  		}
  
  		return ans;
  	}
  
  	static void ruffleSort(int[] a) {
  		Random get = new Random();
  		for (int i = 0; i < a.length; i++) {
  			int r = get.nextInt(a.length);
  			int temp = a[i];
  			a[i] = a[r];
  			a[r] = temp;
  		}
  		Arrays.sort(a);
  	}
  
  	static void ruffleSort(long[] a) {
  		Random get = new Random();
  		for (int i = 0; i < a.length; i++) {
  			int r = get.nextInt(a.length);
  			long temp = a[i];
  			a[i] = a[r];
  			a[r] = temp;
  		}
  		Arrays.sort(a);
  	}
  
  	static void reverseArray(int[] a) {
  		int n = a.length;
  		int arr[] = new int[n];
  		for (int i = 0; i < n; i++)
  			arr[i] = a[n - i - 1];
  		for (int i = 0; i < n; i++)
  			a[i] = arr[i];
  	}
  
  	static void reverseArray(long[] a) {
  		int n = a.length;
  		long arr[] = new long[n];
  		for (int i = 0; i < n; i++)
  			arr[i] = a[n - i - 1];
  		for (int i = 0; i < n; i++)
  			a[i] = arr[i];
  	}
  
  	//custom multiset (replace with HashMap if needed)
  	public static void push(TreeMap<Integer, Integer> map, int k, int v) {
  		//map[k] += v;
  		if (!map.containsKey(k))
  			map.put(k, v);
  		else
  			map.put(k, map.get(k) + v);
  	}
  
  	public static void pull(TreeMap<Integer, Integer> map, int k, int v) {
  		//assumes map[k] >= v
  		//map[k] -= v
  		int lol = map.get(k);
  		if (lol == v)
  			map.remove(k);
  		else
  			map.put(k, lol - v);
  	}
  
  	// compress Big value to Time Limit
  	public static int[] compress(int[] arr) {
  		ArrayList<Integer> ls = new ArrayList<Integer>();
  		for (int x : arr)
  			ls.add(x);
  		Collections.sort(ls);
  		HashMap<Integer, Integer> map = new HashMap<Integer, Integer>();
  		int boof = 1; //min value
  		for (int x : ls)
  			if (!map.containsKey(x))
  				map.put(x, boof++);
  		int[] brr = new int[arr.length];
  		for (int i = 0; i < arr.length; i++)
  			brr[i] = map.get(arr[i]);
  		return brr;
  	}
  
  	// Fast Writer 
  
  	public static class FastWriter {
  		private static final int BUF_SIZE = 1 << 13;
  		private final byte[] buf = new byte[BUF_SIZE];
  		private final OutputStream out;
  		private int ptr = 0;
  
  		private FastWriter() {
  			out = null;
  		}
  
  		public FastWriter(OutputStream os) {
  			this.out = os;
  		}
  
  		public FastWriter(String path) {
  			try {
  				this.out = new FileOutputStream(path);
  			} catch (FileNotFoundException e) {
  				throw new RuntimeException("FastWriter");
  			}
  		}
  
  		public FastWriter write(byte b) {
  			buf[ptr++] = b;
  			if (ptr == BUF_SIZE)
  				innerflush();
  			return this;
  		}
  
  		public FastWriter write(char c) {
  			return write((byte) c);
  		}
  
  		public FastWriter write(char[] s) {
  			for (char c : s) {
  				buf[ptr++] = (byte) c;
  				if (ptr == BUF_SIZE)
  					innerflush();
  			}
  			return this;
  		}
  
  		public FastWriter write(String s) {
  			s.chars().forEach(c -> {
  				buf[ptr++] = (byte) c;
  				if (ptr == BUF_SIZE)
  					innerflush();
  			});
  			return this;
  		}
  
  		private static int countDigits(int l) {
  			if (l >= 1000000000)
  				return 10;
  			if (l >= 100000000)
  				return 9;
  			if (l >= 10000000)
  				return 8;
  			if (l >= 1000000)
  				return 7;
  			if (l >= 100000)
  				return 6;
  			if (l >= 10000)
  				return 5;
  			if (l >= 1000)
  				return 4;
  			if (l >= 100)
  				return 3;
  			if (l >= 10)
  				return 2;
  			return 1;
  		}
  
  		public FastWriter write(int x) {
  			if (x == Integer.MIN_VALUE) {
  				return write((long) x);
  			}
  			if (ptr + 12 >= BUF_SIZE)
  				innerflush();
  			if (x < 0) {
  				write((byte) '-');
  				x = -x;
  			}
  			int d = countDigits(x);
  			for (int i = ptr + d - 1; i >= ptr; i--) {
  				buf[i] = (byte) ('0' + x % 10);
  				x /= 10;
  			}
  			ptr += d;
  			return this;
  		}
  
  		private static int countDigits(long l) {
  			if (l >= 1000000000000000000L)
  				return 19;
  			if (l >= 100000000000000000L)
  				return 18;
  			if (l >= 10000000000000000L)
  				return 17;
  			if (l >= 1000000000000000L)
  				return 16;
  			if (l >= 100000000000000L)
  				return 15;
  			if (l >= 10000000000000L)
  				return 14;
  			if (l >= 1000000000000L)
  				return 13;
  			if (l >= 100000000000L)
  				return 12;
  			if (l >= 10000000000L)
  				return 11;
  			if (l >= 1000000000L)
  				return 10;
  			if (l >= 100000000L)
  				return 9;
  			if (l >= 10000000L)
  				return 8;
  			if (l >= 1000000L)
  				return 7;
  			if (l >= 100000L)
  				return 6;
  			if (l >= 10000L)
  				return 5;
  			if (l >= 1000L)
  				return 4;
  			if (l >= 100L)
  				return 3;
  			if (l >= 10L)
  				return 2;
  			return 1;
  		}
  
  		public FastWriter write(long x) {
  			if (x == Long.MIN_VALUE) {
  				return write("" + x);
  			}
  			if (ptr + 21 >= BUF_SIZE)
  				innerflush();
  			if (x < 0) {
  				write((byte) '-');
  				x = -x;
  			}
  			int d = countDigits(x);
  			for (int i = ptr + d - 1; i >= ptr; i--) {
  				buf[i] = (byte) ('0' + x % 10);
  				x /= 10;
  			}
  			ptr += d;
  			return this;
  		}
  
  		public FastWriter write(double x, int precision) {
  			if (x < 0) {
  				write('-');
  				x = -x;
  			}
  			x += Math.pow(10, -precision) / 2;
  			//		if(x < 0){ x = 0; }
  			write((long) x).write(".");
  			x -= (long) x;
  			for (int i = 0; i < precision; i++) {
  				x *= 10;
  				write((char) ('0' + (int) x));
  				x -= (int) x;
  			}
  			return this;
  		}
  
  		public FastWriter writeln(char c) {
  			return write(c).writeln();
  		}
  
  		public FastWriter writeln(int x) {
  			return write(x).writeln();
  		}
  
  		public FastWriter writeln(long x) {
  			return write(x).writeln();
  		}
  
  		public FastWriter writeln(double x, int precision) {
  			return write(x, precision).writeln();
  		}
  
  		public FastWriter write(int... xs) {
  			boolean first = true;
  			for (int x : xs) {
  				if (!first)
  					write(' ');
  				first = false;
  				write(x);
  			}
  			return this;
  		}
  
  		public FastWriter write(long... xs) {
  			boolean first = true;
  			for (long x : xs) {
  				if (!first)
  					write(' ');
  				first = false;
  				write(x);
  			}
  			return this;
  		}
  
  		public FastWriter writeln() {
  			return write((byte) '\n');
  		}
  
  		public FastWriter writeln(int... xs) {
  			return write(xs).writeln();
  		}
  
  		public FastWriter writeln(long... xs) {
  			return write(xs).writeln();
  		}
  
  		public FastWriter writeln(char[] line) {
  			return write(line).writeln();
  		}
  
  		public FastWriter writeln(char[]... map) {
  			for (char[] line : map)
  				write(line).writeln();
  			return this;
  		}
  
  		public FastWriter writeln(String s) {
  			return write(s).writeln();
  		}
  
  		private void innerflush() {
  			try {
  				out.write(buf, 0, ptr);
  				ptr = 0;
  			} catch (IOException e) {
  				throw new RuntimeException("innerflush");
  			}
  		}
  
  		public void flush() {
  			innerflush();
  			try {
  				out.flush();
  			} catch (IOException e) {
  				throw new RuntimeException("flush");
  			}
  		}
  
  		public FastWriter print(byte b) {
  			return write(b);
  		}
  
  		public FastWriter print(char c) {
  			return write(c);
  		}
  
  		public FastWriter print(char[] s) {
  			return write(s);
  		}
  
  		public FastWriter print(String s) {
  			return write(s);
  		}
  
  		public FastWriter print(int x) {
  			return write(x);
  		}
  
  		public FastWriter print(long x) {
  			return write(x);
  		}
  
  		public FastWriter print(double x, int precision) {
  			return write(x, precision);
  		}
  
  		public FastWriter println(char c) {
  			return writeln(c);
  		}
  
  		public FastWriter println(int x) {
  			return writeln(x);
  		}
  
  		public FastWriter println(long x) {
  			return writeln(x);
  		}
  
  		public FastWriter println(double x, int precision) {
  			return writeln(x, precision);
  		}
  
  		public FastWriter print(int... xs) {
  			return write(xs);
  		}
  
  		public FastWriter print(long... xs) {
  			return write(xs);
  		}
  
  		public FastWriter println(int... xs) {
  			return writeln(xs);
  		}
  
  		public FastWriter println(long... xs) {
  			return writeln(xs);
  		}
  
  		public FastWriter println(char[] line) {
  			return writeln(line);
  		}
  
  		public FastWriter println(char[]... map) {
  			return writeln(map);
  		}
  
  		public FastWriter println(String s) {
  			return writeln(s);
  		}
  
  		public FastWriter println() {
  			return writeln();
  		}
  	}
  
  	// Fast Inputs
  	static class FastScanner {
  		//I don't understand how this works lmao
  		private int BS = 1 << 16;
  		private char NC = (char) 0;
  		private byte[] buf = new byte[BS];
  		private int bId = 0, size = 0;
  		private char c = NC;
  		private double cnt = 1;
  		private BufferedInputStream in;
  
  		public FastScanner() {
  			in = new BufferedInputStream(System.in, BS);
  		}
  
  		public FastScanner(String s) {
  			try {
  				in = new BufferedInputStream(new FileInputStream(new File(s)), BS);
  			} catch (Exception e) {
  				in = new BufferedInputStream(System.in, BS);
  			}
  		}
  
  		private char getChar() {
  			while (bId == size) {
  				try {
  					size = in.read(buf);
  				} catch (Exception e) {
  					return NC;
  				}
  				if (size == -1)
  					return NC;
  				bId = 0;
  			}
  			return (char) buf[bId++];
  		}
  
  		public int nextInt() {
  			return (int) nextLong();
  		}
  
  		public int[] readArray(int N) {
  			int[] res = new int[N];
  			for (int i = 0; i < N; i++) {
  				res[i] = (int) nextLong();
  			}
  			return res;
  		}
  
  		public long[] readArrayLong(int N) {
  			long[] res = new long[N];
  			for (int i = 0; i < N; i++) {
  				res[i] = nextLong();
  			}
  			return res;
  		}
  
  		public int[][] readArrayMatrix(int N, int M, int Index) {
  			if (Index == 0) {
  				int[][] res = new int[N][M];
  				for (int i = 0; i < N; i++) {
  					for (int j = 0; j < M; j++)
  						res[i][j] = (int) nextLong();
  				}
  				return res;
  			}
  			int[][] res = new int[N][M];
  			for (int i = 1; i <= N; i++) {
  				for (int j = 1; j <= M; j++)
  					res[i][j] = (int) nextLong();
  			}
  			return res;
  
  		}
  
  		public long[][] readArrayMatrixLong(int N, int M, int Index) {
  			if (Index == 0) {
  				long[][] res = new long[N][M];
  				for (int i = 0; i < N; i++) {
  					for (int j = 0; j < M; j++)
  						res[i][j] = nextLong();
  				}
  				return res;
  			}
  			long[][] res = new long[N][M];
  			for (int i = 1; i <= N; i++) {
  				for (int j = 1; j <= M; j++)
  					res[i][j] = nextLong();
  			}
  			return res;
  
  		}
  
  		public long nextLong() {
  			cnt = 1;
  			boolean neg = false;
  			if (c == NC)
  				c = getChar();
  			for (; (c < '0' || c > '9'); c = getChar()) {
  				if (c == '-')
  					neg = true;
  			}
  			long res = 0;
  			for (; c >= '0' && c <= '9'; c = getChar()) {
  				res = (res << 3) + (res << 1) + c - '0';
  				cnt *= 10;
  			}
  			return neg ? -res : res;
  		}
  
  		public double nextDouble() {
  			double cur = nextLong();
  			return c != '.' ? cur : cur + nextLong() / cnt;
  		}
  
  		public double[] readArrayDouble(int N) {
  			double[] res = new double[N];
  			for (int i = 0; i < N; i++) {
  				res[i] = nextDouble();
  			}
  			return res;
  		}
  
  		public String next() {
  			StringBuilder res = new StringBuilder();
  			while (c <= 32)
  				c = getChar();
  			while (c > 32) {
  				res.append(c);
  				c = getChar();
  			}
  			return res.toString();
  		}
  
  		public String nextLine() {
  			StringBuilder res = new StringBuilder();
  			while (c <= 32)
  				c = getChar();
  			while (c != '\n') {
  				res.append(c);
  				c = getChar();
  			}
  			return res.toString();
  		}
  
  		public boolean hasNext() {
  			if (c > 32)
  				return true;
  			while (true) {
  				c = getChar();
  				if (c == NC)
  					return false;
  				else if (c > 32)
  					return true;
  			}
  		}
  	}
  
  }
  