import sys


def main():
    # sys.setrecursionlimit(100000)
    input = lambda: sys.stdin.readline()[:-1]
    S1, S2, S3 = input().split()

    one = {"gray", "brown", "green", "cyan", "blue", "yellow", "orange", "red"}
    two = {"gray", "green", "blue", "yellow", "red"}
    three = {"gray", "green", "cyan", "blue", "violet", "orange", "red"}

    if S1 == S2 == S3:
        print("Yes")
        return

    arr1 = [[0] * 3 for _ in [0] * 3]
    for i, s in enumerate((S1, S2, S3)):
        if s in one:
            arr1[i][0] = 1
        if s in two:
            arr1[i][1] = 1
        if s in three:
            arr1[i][2] = 1

    for i, a in enumerate(arr1):
        if sum(a) == 1:
            for j in {0, 1, 2} ^ {i}:
                for k in range(3):
                    if arr1[i][k] == arr1[j][k] == 1:
                        arr1[j][k] = 0

    n = 0
    for a in arr1:
        if sum(a) == 1:
            n += 1
    if not n:
        print("No")
    elif n > 1:
        print("Yes")


if not __debug__:
    f = open(sys.argv[1], "r")
    sys.stdin = f

# try:
#     sys.set_int_max_str_digits(100000)
# except AttributeError:
#     pass

main()