s = len(input())
x = ''
for i in range(0, s):
  x += 'x'
print(x) s = len(input()) s len(input()) len input() input x = '' x '' for i in range(0, s):
  x += 'x' i range(0, s) range 0 s x += 'x' x 'x' print(x) print x x += 'x' 'x' x x = '' '' x s = len(input()) len(input()) s
s = len(input())
x = ''
for i in range(0, s):
  x += 'x'
print(x)