source_code: import java.util.*;
  import java.io.*;
  import java.text.*;
  public class Main{
      //SOLUTION BEGIN
      //Into the Hardware Mode
      void pre() throws Exception{}
      int n, t;
      void solve(int TC) throws Exception{
          n = ni();t = ni();
          int[][] song = new int[n][];
          for(int i = 0; i< n; i++)song[i] = new int[]{ni(), ni()-1};
          long[][] dp = new long[1<<n][3];
          for(int i = 0; i< dp.length; i++)
              for(int j = 0; j< dp[i].length; j++)
                  dp[i][j] = -1;
          pn(start(dp, song, 0, -1));
      }
      long start(long[][] dp, int[][] song, int mask, int prev){
          long ti = 0;
          for(int i = 0; i< n; i++){
              if(((mask>>i)&1)==1)ti+=song[i][0];
          }
          if(ti==t)return 1;
          if(prev != -1 && dp[mask][prev] != -1)return dp[mask][prev];
          long ans = 0;
          for(int i = 0; i< n; i++){
              if(((mask>>i)&1)==0 && song[i][1] != prev && ti+song[i][0] <= t)
                  ans = (ans+start(dp, song, mask|(1<<i), song[i][1]))%mod;
          }
          if(prev!= -1)dp[mask][prev] = ans;
          return ans;
      }
      //SOLUTION END
      void hold(boolean b)throws Exception{if(!b)throw new Exception("Hold right there, Sparky!");}
      long mod = (long)1e9+7, IINF = (long)1e18;
      final int INF = (int)1e9, MX = (int)2e5+5;
      DecimalFormat df = new DecimalFormat("0.00000000000");
      double PI = 3.141592653589793238462643383279502884197169399, eps = 1e-8;
      static boolean multipleTC = false, memory = false;
      FastReader in;PrintWriter out;
      void run() throws Exception{
          in = new FastReader();
          out = new PrintWriter(System.out);
          //Solution Credits: Taranpreet Singh
          int T = (multipleTC)?ni():1;
          pre();for(int t = 1; t<= T; t++)solve(t);
          out.flush();
          out.close();
      }
      public static void main(String[] args) throws Exception{
          if(memory)new Thread(null, new Runnable() {public void run(){try{new Main().run();}catch(Exception e){e.printStackTrace();}}}, "1", 1 << 28).start();
          else new Main().run();
      }
      long gcd(long a, long b){return (b==0)?a:gcd(b,a%b);}
      int gcd(int a, int b){return (b==0)?a:gcd(b,a%b);}
      int bit(long n){return (n==0)?0:(1+bit(n&(n-1)));}
      void p(Object o){out.print(o);}
      void pn(Object o){out.println(o);}
      void pni(Object o){out.println(o);out.flush();}
      String n()throws Exception{return in.next();}
      String nln()throws Exception{return in.nextLine();}
      int ni()throws Exception{return Integer.parseInt(in.next());}
      long nl()throws Exception{return Long.parseLong(in.next());}
      double nd()throws Exception{return Double.parseDouble(in.next());}
  
      class FastReader{
          BufferedReader br;
          StringTokenizer st;
          public FastReader(){
              br = new BufferedReader(new InputStreamReader(System.in));
          }
  
          public FastReader(String s) throws Exception{
              br = new BufferedReader(new FileReader(s));
          }
  
          String next() throws Exception{
              while (st == null || !st.hasMoreElements()){
                  try{
                      st = new StringTokenizer(br.readLine());
                  }catch (IOException  e){
                      throw new Exception(e.toString());
                  }
              }
              return st.nextToken();
          }
  
          String nextLine() throws Exception{
              String str = "";
              try{   
                  str = br.readLine();
              }catch (IOException e){
                  throw new Exception(e.toString());
              }  
              return str;
          }
      }
  }