import java.io.*;
public class Fail{
 public static void main(String arg[]) throws IOException{
      String stroka,bukva,fail,slovo,vorto;

        PrintWriter ekran=new PrintWriter(System.out, true);
        BufferedReader vvod=new BufferedReader ( new InputStreamReader(System.in));

          ekran.println("Sisastage palun faili nimi.");
          fail=vvod.readLine();
          ekran.println("Sisastage palun vaadeldav taht.");
          slovo=vvod.readLine();
          bukva=slovo.substring(0,1);

       RandomAccessFile f=new RandomAccessFile(fail, "r");
       RandomAccessFile f2=new RandomAccessFile("output.log","rw");

       stroka=f.readLine();
       vorto="";
             
       while(stroka!=null){
             for(int n=1;n<stroka.length();n++ ){
                
                 if (stroka.substring(n,n+1).equals(" ")){
                     int raz=0;


                     for(int w=1;w<vorto.length();w++){
                       if(bukva.equals(vorto.substring(w,w+1))){raz=raz+1;} 
                       
                     }
                     if(raz>1){f2.writeChars(vorto);}
                      vorto="";}
                  
                   vorto=vorto+stroka.substring(n,n+1);
             }
       stroka=f.readLine();
       }
}
}