description: A bracket sequence is a string containing only characters "(" and ")". A regular bracket sequence is a bracket sequence that can be transformed into a correct arithmetic expression by inserting characters "1" and "+" between the original characters of the sequence. For example, bracket sequences "()()" and "(())" are regular (the resulting expressions are: "(1)+(1)" and "((1+1)+1)"), and ")(", "(" and ")" are not.
  
  You are given an integer n. Your goal is to construct and print exactly n different regular bracket sequences of length 2n.
  
  Input
  
  The first line contains one integer t (1 ≤ t ≤ 50) — the number of test cases.
  
  Each test case consists of one line containing one integer n (1 ≤ n ≤ 50).
  
  Output
  
  For each test case, print n lines, each containing a regular bracket sequence of length exactly 2n. All bracket sequences you output for a testcase should be different (though they may repeat in different test cases). If there are multiple answers, print any of them. It can be shown that it's always possible.
  
  Example
  
  Input
  
  
  3
  3
  1
  3
  
  
  Output
  
  
  ()()()
  ((()))
  (()())
  ()
  ((()))
  (())()
  ()(())
solution: // 😀 
  
  import java.util.*;
  import java.io.*;
  
  public class A1 {
      static InputReader in;
      static PrintWriter out;
      static int mod = 1000_000_007;
  
      public static void main(String args[]) {
          new Thread(null, new Runnable() {
              public void run() {
                  try {
                      solve();
                      out.flush();
                      out.close();
                  } catch (Exception e) {
                      e.printStackTrace();
                  }
              }
          }, "1", 1 << 26).start();
      }
  
      public static void solve() {
          in = new InputReader(System.in);
          out = new PrintWriter(System.out);
  
          int t = in.nextInt();
          while (t-- > 0) {
              int n = in.nextInt();
  
              for (int i = 0; i < n; i++) {
                  StringBuilder sb = new StringBuilder("");
                  for (int j = 0; j <= i; j++) {
                      sb.append('(');
                  }
                  for (int j = 0; j <= i; j++) {
                      sb.append(')');
                  }
                  for (int j = 2*(i+1); j < 2*n; j+=2) {
                      sb.append("()");
  
                  }
                  
  
                  out.println(sb);
              }
          }
      }
  
      static class InputReader {
          private final InputStream stream;
          private final byte[] buf = new byte[8192];
          private int curChar, numChars;
          private SpaceCharFilter filter;
  
          public InputReader(InputStream stream) {
              this.stream = stream;
          }
  
          public int read() {
              if (numChars == -1) {
                  throw new InputMismatchException();
              }
              if (curChar >= numChars) {
                  curChar = 0;
                  try {
                      numChars = stream.read(buf);
                  } catch (IOException e) {
                      throw new InputMismatchException();
                  }
                  if (numChars <= 0) {
                      return -1;
                  }
              }
              return buf[curChar++];
          }
  
          public String nextLine() {
              int c = read();
              while (isSpaceChar(c)) {
                  c = read();
              }
              StringBuilder res = new StringBuilder();
              do {
                  res.appendCodePoint(c);
                  c = read();
              } while (!isEndOfLine(c));
              return res.toString();
          }
  
          public String readString() {
              int c = read();
              while (isSpaceChar(c)) {
                  c = read();
              }
              StringBuilder res = new StringBuilder();
              do {
                  res.appendCodePoint(c);
                  c = read();
              } while (!isSpaceChar(c));
              return res.toString();
          }
  
          public long nextLong() {
              int c = read();
              while (isSpaceChar(c)) {
                  c = read();
              }
              int sgn = 1;
              if (c == '-') {
                  sgn = -1;
                  c = read();
              }
              long res = 0;
              do {
                  if (c < '0' || c > '9') {
                      throw new InputMismatchException();
                  }
                  res *= 10;
                  res += c - '0';
                  c = read();
              } while (!isSpaceChar(c));
              return res * sgn;
          }
  
          public int nextInt() {
              int c = read();
              while (isSpaceChar(c)) {
                  c = read();
              }
              int sgn = 1;
              if (c == '-') {
                  sgn = -1;
                  c = read();
              }
              int res = 0;
              do {
                  if (c < '0' || c > '9') {
                      throw new InputMismatchException();
                  }
                  res *= 10;
                  res += c - '0';
                  c = read();
              } while (!isSpaceChar(c));
              return res * sgn;
          }
  
          public int[] nextIntArray(int n) {
              int[] arr = new int[n];
              for (int i = 0; i < n; i++) {
                  arr[i] = nextInt();
              }
              return arr;
          }
  
          public long[] nextLongArray(int n) {
              long[] arr = new long[n];
              for (int i = 0; i < n; i++) {
                  arr[i] = nextLong();
              }
              return arr;
          }
  
          public boolean isSpaceChar(int c) {
              if (filter != null)
                  return filter.isSpaceChar(c);
              return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
          }
  
          private boolean isEndOfLine(int c) {
              return c == '\n' || c == '\r' || c == -1;
          }
  
          public interface SpaceCharFilter {
              public boolean isSpaceChar(int ch);
          }
      }
  
      public static int[] sort(int[] arr) {
          List<Integer> temp = new ArrayList();
          for (int i : arr) temp.add(i);
          Collections.sort(temp);
          int start = 0;
          for (int i : temp) arr[start++] = i;
          return arr;
      }
  
      public static long[] sort(long[] arr) {
          List<Long> temp = new ArrayList();
          for (long i : arr) temp.add(i);
          Collections.sort(temp);
          int start = 0;
          for (long i : temp) arr[start++] = i;
          return arr;
      }
  
  }
  