S = list(input())

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

for i in S:
    print("x",end="")