s = input()
for _ in range(len(s)):
    print("x", end="") s = input() s input() input for _ in range(len(s)):
    print("x", end="") _ range(len(s)) range len(s) len s print("x", end="") print "x" end="" end "" s = input() input() s
s = input()
for _ in range(len(s)):
    print("x", end="")
