import re

if __name__ == "__main__":
    while True:
        try:
            line = input()
            if not line:
                break

            result = re.sub(r'(\b\w+\b) (\b\w+\b) (\b\w+\b)', lambda match: f'{match.group(1)} {match.group(2)} {"x" * len(match.group(3))}', line)
            print(result)

        except EOFError:
            break