from itertools import permutations
A = ["gray","brown","green","cyan","blue","yellow","orange","red"]
B = ["gray","green","blue","yellow","red"]
C = ["gray","green","cyan","blue","violet","orange","red"]
D = list(input().split())
E = set()
for p in permutations(D,3):
    if p[0] in A and p[1] in B and p[2] in C:
        E.add((p[0],p[1],p[2]))
if len(E)==1:
    print("Yes")
else:
    print("No")