import sys

sys.setrecursionlimit(10**6)
int1 = lambda x: int(x)-1
p2D = lambda x: print(*x, sep="\n")
def II(): return int(sys.stdin.buffer.readline())
def FI(): return float(sys.stdin.buffer.readline())
def MI(): return map(int, sys.stdin.buffer.readline().split())
def MF(): return map(float, sys.stdin.buffer.readline().split())
def MI1(): return map(int1, sys.stdin.buffer.readline().split())
def LI(): return list(map(int, sys.stdin.buffer.readline().split()))
def LI1(): return list(map(int1, sys.stdin.buffer.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]
def LLI1(rows_number): return [LI1() for _ in range(rows_number)]
def BI(): return sys.stdin.buffer.readline().rstrip()
def SI(): return sys.stdin.buffer.readline().rstrip().decode()
dij = [(0, 1), (-1, 0), (0, -1), (1, 0)]
inf = 10**16
# md = 998244353
md = 10**9+7

def ok(i=0,head=False):
    if i==9:return True
    if cnt[i]==0:return ok(i+1,head)
    if cnt[i]>1 and not head:
        cnt[i]-=2
        if ok(i,True):return True
        cnt[i]+=2
    if cnt[i]>2:
        cnt[i]-=3
        if ok(i,head):return True
    if i+2<9 and cnt[i] and cnt[i+1] and cnt[i+2]:
        cnt[i]-=1
        cnt[i+1]-=1
        cnt[i+2]-=1
        if ok(i,head):return True
        cnt[i]+=1
        cnt[i+1]+=1
        cnt[i+2]+=1
    return False

s=BI()
cnt_ori=[0]*9
for c in s:cnt_ori[c-49]+=1

ans=[]
for i in range(9):
    if cnt_ori[i]==4:continue
    cnt=cnt_ori[:]
    cnt[i]+=1
    if ok():ans.append(i+1)

print(*ans,sep="\n")