S = input()

a = ""

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

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

a = ""

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

print(a)