import java.io.*;
import java.util.StringTokenizer;
public class Asona3{
  public static void main(String argumendid[])
  throws IOException{
    BufferedReader klaviatuur=new BufferedReader(
      new InputStreamReader(System.in)
    );
    System.out.println("Palun failinimi:");
    String failinimi=klaviatuur.readLine();
    System.out.println("Palun täht");
    String taht=klaviatuur.readLine();
    BufferedReader sisse=new BufferedReader(
      new FileReader(failinimi)
    );
    String rida=sisse.readLine();
    while(rida!=null){
      StringTokenizer st=new StringTokenizer(rida, " ");
      while(st.hasMoreTokens()){
        String sona=st.nextToken();
        if(sona.startsWith(taht))System.out.println(sona);
      }
      rida=sisse.readLine();
    }
  }
}