input = input()
str = ""
for i in range(len(input)):
    str += "x"
print(str) input = input() input input() input str = "" str "" for i in range(len(input)):
    str += "x" i range(len(input)) range len(input) len input str += "x" str "x" print(str) print str str = "" "" str str += "x" "x" str input = input() input() input
input = input()
str = ""
for i in range(len(input)):
    str += "x"
print(str)