S = str(input())
r = len(S)
print('x'*r) S = str(input()) S str(input()) str input() input r = len(S) r len(S) len S print('x'*r) print 'x'*r 'x' r r = len(S) len(S) r S = str(input()) str(input()) S
S = str(input())
r = len(S)
print('x'*r)