source_code: import java.io.*;
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.List;
  import java.util.StringTokenizer;
   
   public class realfast implements Runnable {
      private static final int INF = (int) 1e9;
      int time[]= new int[15];
       int g[]= new int [15];
      public  void solve() throws IOException 
      {
       int n = readInt();
       int t = readInt();
       
       for(int i=0;i<n;i++)
       {
       	time[i]=readInt();
       	g[i]=readInt();
       }
       long dp[][]= new long [(int)Math.pow(2,n)][4];
       for(int i =0;i<(int)Math.pow(2,n);i++)
       {
        for(int j=0;j<=3;j++)
         dp[i][j]=-1;	
       }
       long val = cal(dp,0,0,0,t);
       out.println(val);
  
      }
      public long cal(long dp[][], int mask , int genre , int t ,int T  )
      {
      	int val = dp.length;
    
          if(t>T)
          {
           return 0;	
          }
      	if(t==T)
      	{
      	 	return 1;
      	}
        
         if(dp[mask][genre]!=-1)
          return dp[mask][genre];
          dp[mask][genre]=0;
         int i=1;
         int count=0;
         while(i<val)
         {
        
         	if((i&mask)==0&&g[count]!=genre)
         	{
         	 	dp[mask][genre] = ((dp[mask][genre]%1000000007)+ cal(dp,mask|i,g[count],t+time[count],T)%1000000007)%1000000007;
         	}
         	i=2*i;
         	count++;
         }
         return dp[mask][genre];
      }
      
  
      
      ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
      public static void main(String[] args) {
          new Thread(null, new realfast(), "", 128 * (1L << 20)).start();
      }
   
      private static final boolean ONLINE_JUDGE = System.getProperty("ONLINE_JUDGE") != null;
      private BufferedReader reader;
      private StringTokenizer tokenizer;
      private PrintWriter out;
   
      @Override
      public void run() {
          try {
              if (ONLINE_JUDGE || !new File("input.txt").exists()) {
                  reader = new BufferedReader(new InputStreamReader(System.in));
                  out = new PrintWriter(System.out);
              } else {
                  reader = new BufferedReader(new FileReader("input.txt"));
                  out = new PrintWriter("output.txt");
              }
              solve();
          } catch (IOException e) {
              throw new RuntimeException(e);
          } finally {
              try {
                  reader.close();
              } catch (IOException e) {
                  // nothing
              }
              out.close();
          }
      }
   
      private String readString() throws IOException {
          while (tokenizer == null || !tokenizer.hasMoreTokens()) {
              tokenizer = new StringTokenizer(reader.readLine());
          }
          return tokenizer.nextToken();
      }
   
      @SuppressWarnings("unused")
      private int readInt() throws IOException {
          return Integer.parseInt(readString());
      }
   
      @SuppressWarnings("unused")
      private long readLong() throws IOException {
          return Long.parseLong(readString());
      }
   
      @SuppressWarnings("unused")
      private double readDouble() throws IOException {
          return Double.parseDouble(readString());
      }
  }
  class edge implements Comparable<edge>{
      int u ;
      int v ;
      int val;
      edge(int u1, int v1 , int val1)
      {
         this.u=u1;
         this.v=v1;
         this.val=val1;
      }
      public int compareTo(edge e)
      {
          return this.val-e.val;
      }
  }