s = input()
len_s = len(s)
print('x'*len_s) s = input() s input() input len_s = len(s) len_s len(s) len s print('x'*len_s) print 'x'*len_s 'x' len_s len_s = len(s) len(s) len_s s = input() input() s
s = input()
len_s = len(s)
print('x'*len_s)