S = list(input())
for _ in S:
  print("x",end="") S = list(input()) S list(input()) list input() input for _ in S:
  print("x",end="") _ S print("x",end="") print "x" end="" end "" S = list(input()) list(input()) S
S = list(input())
for _ in S:
  print("x",end="")
