#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

int main() {
    int a[4];
    while (1) {
        a[0]=rand()%10;
        a[1]=rand()%10;
        a[2]=rand()%10;
        a[3]=rand()%10;
        if (a[0]!=a[1]&&a[0]!=a[2]&&a[0]!=a[3]&&a[1]!=a[2]&&a[1]!=a[3]&&a[2]!=a[3]) {
            cout<<a[0]<<' '<<a[1]<<' '<<a[2]<<' '<<a[3]<<endl;
            int x,y;
            cin>>x>>y;
            if (x==4)
                return 0;
            if (x+y==4)
                break;
        }
    }
    sort(a,a+4);
    do {
        cout<<a[0]<<' '<<a[1]<<' '<<a[2]<<' '<<a[3]<<endl;
        int x,y;
        cin>>x>>y;
        if (x==4)
            break;
    } while (next_permutation(a,a+4));
    return 0;
}