#include<bits/stdc++.h>

using namespace std;

#define LL           long long
#define ULL          long long unsigned
#define LD           long double
#define FOR(i,n)     for(int i=0;i<n;i++)
#define FLR(i,n)     for(LL i=0;i<n;i++)
#define RFOR(i,n)    for(int i=n-1;i>=0;i--)
#define RFLR(i,n)    for(LL i=n-1;i>=0;i--)
#define rep(i,a,b)   for(int i=a;i<=b;i++)
#define repl(i,a,b)  for(LL i=a;i<=b;i++)
#define fast         ios_base::sync_with_stdio(0);cin.tie(0);
#define all(a)       a.begin(),a.end()
#define ABS(x)       ((x)<0?-(x):(x))
#define NL         "\n"
#define pb           push_back
#define pi          acos(-1.0)
#define sq(a)         (a)*(a)
#define prec(n)      fixed << setprecision(n)
int main()
{
    fast;

    int i,j,k,ans,kount=0,flag,ara[10],bull,cow;
    string s;
    while(bull!=4){
        cout<<"0000"<<endl;
        cin>>bull>>cow;
        ara[0]=bull;
        cout<<"1111"<<endl;
        cin>>bull>>cow;
        ara[1]=bull;
        cout<<"2222"<<endl;
        cin>>bull>>cow;
        ara[2]=bull;
        cout<<"3333"<<endl;
        cin>>bull>>cow;
        ara[3]=bull;
        cout<<"4444"<<endl;
        cin>>bull>>cow;
        ara[4]=bull;
        cout<<"5555"<<endl;
        cin>>bull>>cow;
        ara[5]=bull;
        cout<<"6666"<<endl;
        cin>>bull>>cow;
        ara[6]=bull;
        cout<<"7777"<<endl;
        cin>>bull>>cow;
        ara[7]=bull;
        cout<<"8888"<<endl;
        cin>>bull>>cow;
        ara[8]=bull;
        cout<<"9999"<<endl;
        cin>>bull>>cow;
        ara[9]=bull;



    }
    return 0;


}