S = [list(input()) for _ in range(3)]

l1 = ["#", ".", "#"]
l2 = [".", "#", "."]

s1 = [l1[:], l2[:], l1[:]]
s2 = [l2[:], l1[:], l2[:]]

if S == s1 or S == s2:
    print("Yes")
else:
    print("No")