s = list(input())
m = len(s)
for i in range(m):
  print("x",end="") s = list(input()) s list(input()) list input() input m = len(s) m len(s) len s for i in range(m):
  print("x",end="") i range(m) range m print("x",end="") print "x" end="" end "" s = list(input()) list(input()) s m = len(s) len(s) m
s = list(input())
m = len(s)
for i in range(m):
  print("x",end="")