s=input()
sLength=len(s)

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

print('x'*sLength)