S = input()
L = len(S)
for i in range(L):
    print("x",end='') S = input() S input() input L = len(S) L len(S) len S for i in range(L):
    print("x",end='') i range(L) range L print("x",end='') print "x" end='' end '' S = input() input() S L = len(S) len(S) L
S = input()
L = len(S)
for i in range(L):
    print("x",end='')