import java.io.*;
import java.util.StringTokenizer;
public class Asona2{
  public static void main(String argumendid[])
  throws IOException{
    BufferedReader sisse=new BufferedReader(
      new InputStreamReader(System.in)
    );
    System.out.println("Palun lause:");
    String lause=sisse.readLine();
    StringTokenizer st=new StringTokenizer(lause, " ");
    while(st.hasMoreTokens()){
      String sona=st.nextToken();
      if(sona.startsWith("a"))System.out.println(sona);
    }
  }
}