N = input().strip()
A = [0]*300
N = N[::-1]
D = {"A":10, "B":11, "C":12, "D":13, "E":14, "F":15}
for i in range(len(N)):
    a = D[N[i]]
    q = i//3
    r = i%3
    m = a*pow(2,r)
    y = i+q
    while m>0:
        x = m%8
        A[y] += x
        m -= x
        m = m//8
        y += 1
E = {i:0 for i in range(8)}
for i in range(300):
    if i==y:break
    E[A[i]] += 1
nmax = 0
for i in range(8):
    if E[i]>nmax:
        nmax = E[i]
ans = []
for i in range(8):
    if E[i]==nmax:
        ans.append(i)
print(*ans)