options {
  IGNORE_CASE=true;
  }

PARSER_BEGIN(IdS)

public class IdS {

  public static void main(String args[]) throws ParseException {
    IdS parser = new IdS(System.in);
    parser.Input();
  }

}

PARSER_END(IdS)

SKIP :
{
  " "
| "\t"
| "\n"
| "\r"
}

TOKEN :
{
  < Id: ["A"-"Z"] ("A"-"Z","0"-"9","_"] )* >
}

void Input() :
{}
{
  ( <Id> )+ <EOF>
}