S=input()

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

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

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

print(ch)