u = str(input())

len_ =len(u)

tmp = str()

for i in range(len_):
      tmp = tmp + 'x'

print(tmp) u = str(input()) u str(input()) str input() input len_ =len(u) len_ len(u) len u tmp = str() tmp str() str for i in range(len_):
      tmp = tmp + 'x' i range(len_) range len_ tmp = tmp + 'x' tmp tmp + 'x' tmp 'x' print(tmp) print tmp tmp = tmp + 'x' tmp + 'x' tmp u = str(input()) str(input()) u len_ =len(u) len(u) len_ tmp = str() str() tmp
u = str(input())

len_ =len(u)

tmp = str()

for i in range(len_):
      tmp = tmp + 'x'

print(tmp)