S=input()
S_len=len(S)
K=''
for i in range(S_len):
  K+='x'
  
print(K) S=input() S input() input S_len=len(S) S_len len(S) len S K='' K '' for i in range(S_len):
  K+='x'
   i range(S_len) range S_len K+='x' K 'x' print(K) print K S=input() input() S S_len=len(S) len(S) S_len K+='x' 'x' K K='' '' K
S=input()
S_len=len(S)
K=''
for i in range(S_len):
  K+='x'
  
print(K)