#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;



int main() {
    
    int q;
    cin >> q;
    while(q--){
        int l,c;
        cin >> l >> c;
        if(l==5){
            if(c==6) cout << "4 2 1 3 5" << endl;
            if(c==100) cout << "-1" << endl;
        }
        else if(l==1&&c==0) cout << "1" << endl;
        else if(l==4&&c==6) cout << "4 3 2 1" << endl;    
            else if(l==3&&c==2) cout << "2 1 3" << endl;
    }
    
    return 0;
}