#include<bits/stdc++.h>
using lint=long long;
using real=long double;
int main(){
    std::cin.tie(nullptr);std::ios_base::sync_with_stdio(false);
    std::cout.setf(std::ios_base::fixed);std::cout.precision(15);
    std::vector<lint>a(10);
    for(lint i=0;i<13;i++){
        char c;std::cin>>c;
        a.at(c-'0')++;
    }
    a.at(1)++;
    for(lint i=1;i<=9;a.at(i)--,i++,i<=9&&a.at(i)++){
        if(4<a.at(i))continue;
        if(std::all_of(a.begin(),a.end(),[](lint x){return x==0||x==2;})){
            std::cout<<i<<'\n';
            continue;
        }
        bool found=false;
        for(lint j=1;j<=9;a.at(j)+=2,j++){
            a.at(j)-=2;
            if(a.at(j)<0)continue;
            auto b=a;
            for(lint k=1;k<=10;k++){
                if(k==10){found=true;break;}
                if(3<=b.at(k))b.at(k)-=3;
                if(b.at(k)==0)continue;
                if(8<=k||b.at(k)>b.at(k+1)||b.at(k)>b.at(k+2))break;
                b.at(k+1)-=b.at(k);
                b.at(k+2)-=b.at(k);
                b.at(k)=0;
            }
        }
        if(found){
            std::cout<<i<<'\n';
        }
    }
}