import random

last = 0
skipped = 0
sym=[" ","X"]
a=""
b=""
for i in range(100):
    if skipped:
        a+=sym[last]
        b+=sym[not(last)]
        skipped = 0
    elif random.randint(0,10)%2 != last:
        last = not(last)
        skipped = 1
        a+=" "
        b+=" "
    else:
        a+=sym[last]
        b+=sym[not(last)]
        
print(a)
print(b)