import java.util.Scanner;

class Q5{

  private static String unhideLetter(String word, String hiddenWord, Character letter){
    for(int i=0; i < word.length(); i++){
      if(letter.toUpperCase(letter) == word.charAt(i)){
        hiddenWord = hiddenWord.substring(0, i) + word.charAt(i) + hiddenWord.substring(i + 1);
      }
    }
    return hiddenWord;
  }
  public static void main(String[] args){
    String word = "POLAND";
    String hiddenWord = "";
    Scanner input = null;

    for (Integer i=0; i < word.length(); i++){

      hiddenWord = hiddenWord.concat("_");
    }
    System.out.println(hiddenWord);

    while(word != hiddenWord){
      input = new Scanner(System.in);
      Character guessedLetter = input.next().charAt(0);
      hiddenWord = unhideLetter(word, hiddenWord, guessedLetter);
      System.out.println(hiddenWord);

    }
  }

}