S = input()
a = len(S)
ans = ""
for i in range(a):
  ans += "x"
print(ans) S = input() S input() input a = len(S) a len(S) len S ans = "" ans "" for i in range(a):
  ans += "x" i range(a) range a ans += "x" ans "x" print(ans) print ans ans = "" "" ans a = len(S) len(S) a S = input() input() S ans += "x" "x" ans
S = input()
a = len(S)
ans = ""
for i in range(a):
  ans += "x"
print(ans)