#include <bits/stdc++.h>
//#include <atcoder/all>
using namespace std;
//using namespace atcoder;
//using mint = modint1000000007;
//const int mod = 1000000007;
//using mint = modint998244353;
//const int mod = 998244353;
//const int INF = 1e9;
//const long long LINF = 1e18;
#define rep(i, n) for (int i = 0; i < (n); ++i)
#define rep2(i,l,r)for(int i=(l);i<(r);++i)
#define rrep(i, n) for (int i = (n-1); i >= 0; --i)
#define rrep2(i,l,r)for(int i=(r-1);i>=(l);--i)
#define all(x) (x).begin(),(x).end()
#define allR(x) (x).rbegin(),(x).rend()
#define endl "\n"
#define P pair<int,int>
template<typename A, typename B> inline bool chmax(A & a, const B & b) { if (a < b) { a = b; return true; } return false; }
template<typename A, typename B> inline bool chmin(A & a, const B & b) { if (a > b) { a = b; return true; } return false; }

int main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	set<string>st;
	rep2(i, 1, 10)rep2(j, i + 1, 10)rep2(k, j + 1, 10)rep2(l, k + 1, 10)rep2(m, l + 1, 10)rep2(n, m + 1, 10)rep2(o, n + 1, 10) {
		string str;
		rep(_, 2)str += i + '0';
		rep(_, 2)str += j + '0';
		rep(_, 2)str += k + '0';
		rep(_, 2)str += l + '0';
		rep(_, 2)str += m + '0';
		rep(_, 2)str += n + '0';
		rep(_, 2)str += o + '0';
		st.insert(str);
	}
	rep2(i, 1, 10)rep2(j, 1, 10)rep2(k, 1, 10)rep2(l, 1, 10)rep2(m, 1, 10) {
		rep(t0, 2)rep(t1, 2)rep(t2, 2)rep(t3, 2) {
			vector<int>cnt(12);
			string str;
			rep(_, 2) {
				str += i + '0';
				cnt[i]++;
			}
			auto f = [&](int x, int type)->void {
				rep(_, 3) {
					str += x + _ * type + '0';
					cnt[x + _ * type]++;
				}
			};
			f(j, t0), f(k, t1), f(l, t2), f(m, t3);
			bool chk = true;
			rep(i, 12) {
				if (cnt[i] > 4)chk = false;
				if ((i >= 10) && (cnt[i]))chk = false;
			}
			if (!chk)break;
			sort(all(str));
			st.insert(str);
		}
	}
	string s; cin >> s;
	rep2(i, 1, 10) {
		auto cs = s;
		cs += i + '0';
		sort(all(cs));
		if (st.count(cs)) cout << i << endl;
	}
	return 0;
}