n = list(input())

for i in range(0, len(n)):
    print("x", end = "") n = list(input()) n list(input()) list input() input for i in range(0, len(n)):
    print("x", end = "") i range(0, len(n)) range 0 len(n) len n print("x", end = "") print "x" end = "" end "" n = list(input()) list(input()) n
n = list(input())

for i in range(0, len(n)):
    print("x", end = "")