public static String firstLetter(String r)
  {
    if(r.substring(0, 1).equals("1")){
    String q = ONE;
    }
    else if(r.substring(0, 1).equals("2")){
    String q = TWO;
    }
    else if(r.substring(0, 1).equals("3")){
    String q = THREE;
    }
    else if(r.substring(0, 1).equals("4")){
    String q = FOUR;
    }
    else if(r.substring(0, 1).equals("5")){
    String q = FIVE;
    }
    else if(r.substring(0, 1).equals("6")){
    String q = SIX;
    }
    else if(r.substring(0, 1).equals("7")){
    String q = SEVEN;
    }
    else if(r.substring(0, 1).equals("8")){
    String q = EIGHT;
    }
    else if(r.substring(0, 1).equals("9")){
    String q = NINE;
    }
    else if(r.substring(0, 1).equals("0")){
    String q = ZERO;
    }
 return q;

  }