import java.io.*;

class charentTest {

  public static void main(String args[]) throws IOException {
    char c, d, q;
    String s, t;
    DataInputStream inData = new DataInputStream(System.in);
    do {
      s = inData.readLine();
      t = "";
      for(int i = 0; i < s.length(); i++) {
        q = s.charAt(i);
        d = charEnt.capture(q);
        if(d != 0)
          t += d;
      }
      System.out.println("OUTPUT =  " + t);
    } while(!s.equals("stop"));
  }

}