import sys
input = sys.stdin.readline
from collections import *

N = input()[:-1]
binary = []

for Ni in N:
    if Ni=='A':
        binary += [1, 0, 1, 0]
    elif Ni=='B':
        binary += [1, 0, 1, 1]
    elif Ni=='C':
        binary += [1, 1, 0, 0]
    elif Ni=='D':
        binary += [1, 1, 0, 1]
    elif Ni=='E':
        binary += [1, 1, 1, 0]
    elif Ni=='F':
        binary += [1, 1, 1, 1]

binary = [0]*((3-len(binary)%3)%3)+binary
cnt = defaultdict(int)

for i in range(0, len(binary), 3):
    v = 4*binary[i]+2*binary[i+1]+binary[i+2]
    cnt[v] += 1

M = max(cnt.values())
ans = [v for v in range(8) if cnt[v]==M]
print(*ans)