// NOTE: it is recommended to use this even if you don't understand the following code.

#include <fstream>
#include <iostream>

using namespace std;

int main() {
    // uncomment the following lines if you want to read/write from files
    // ifstream cin("input.txt");
    // ofstream cout("output.txt");

    int T;
    cin >> T;
    while (T--) {
        int A, B;
        cin >> A >> B;
        if(A < 33 or B > 52) cout << "-1 -1\n";
        else if(A == 33){///3 jatszma
            if(B > 30) cout << "-1 -1\n";
            else{
                while(A > 0){
                    cout << 11 << " " << min(10, B) << "\n";
                    A = A - 11; B = B - min(10, B);
                }
            }
        }
    }

    return 0;
}