score = input()
leng = len(score)
answer = 'x'*leng
print(answer) score = input() score input() input leng = len(score) leng len(score) len score answer = 'x'*leng answer 'x'*leng 'x' leng print(answer) print answer score = input() input() score leng = len(score) len(score) leng answer = 'x'*leng 'x'*leng answer
score = input()
leng = len(score)
answer = 'x'*leng
print(answer)