#include<bits/stdc++.h>
using namespace std;
using Int = long long;
template<typename T1,typename T2> inline void chmin(T1 &a,T2 b){if(a>b) a=b;}
template<typename T1,typename T2> inline void chmax(T1 &a,T2 b){if(a<b) a=b;}


template<typename F>
struct FixPoint : F{
  FixPoint(F&& f):F(forward<F>(f)){}
  template<typename... Args>
  decltype(auto) operator()(Args&&... args) const{
    return F::operator()(*this,forward<Args>(args)...);
  }  
};
template<typename F>
inline decltype(auto) MFP(F&& f){
  return FixPoint<F>{forward<F>(f)};
}

//INSERT ABOVE HERE

signed main(){
  string s;
  cin>>s;

  vector<Int> w(9);
  set<vector<Int> > ss;
  MFP([&](auto dfs,Int k)->void{
        if(k==5){
          for(Int i=0;i<9;i++)
            if(w[i]>4) return;
          ss.emplace(w);
          return;
        }
        if(k==0){
          for(Int i=0;i<9;i++){
            if(w[i]+2>5) continue;
            w[i]+=2;           
            dfs(k+1);
            w[i]-=2;
          }
        }else{
          for(Int i=0;i<9;i++){
            if(w[i]+3>5) continue;
            w[i]+=3;
            dfs(k+1);
            w[i]-=3;
          }
          for(Int i=0;i+2<9;i++){
            w[i]++;w[i+1]++;w[i+2]++;
            dfs(k+1);
            w[i]--;w[i+1]--;w[i+2]--;
          }
        }
      })(0);
  
  MFP([&](auto dfs,Int k)->void{
        if(k==7){
          for(Int i=0;i<9;i++)
            if(w[i]!=0&&w[i]!=2) return;
          ss.emplace(w);
          return;
        }
        for(Int i=0;i<9;i++){
          if(w[i]) continue;
          w[i]+=2;
          dfs(k+1);
          w[i]-=2;
        }
      })(0);  

  
  vector<Int> v(9);
  for(char c:s) v[c-'1']++;
  
  for(Int i=0;i<9;i++){
    v[i]++;
    if(ss.count(v)) cout<<i+1<<endl;
    v[i]--;
  }  
  return 0;
}