#!/usr/bin/python3

import sys
import re

for input in sys.stdin.readlines():
	answer = re.sub('(([\W]*[\w\d]+[\W]+[\w\d]+[\W]+)([\w\d]+)(.*$))', lambda match: match.group(2)+'x'*len(match.group(3))+match.group(4), input)
	if answer:
		print(answer[:-1])
	else:
		print(input[:-1])