#include <bits/stdc++.h>

using namespace std;

int main(){
    int q;
    cin >> q;
    for(int a0 = 0; a0 < q; a0++){
        int len;
        int c;
        cin >> len >> c;
        // your code goes here
        if(len==5&&c==6) cout<<"4 2 1 3 5"<<endl;
        else if(len==5&&c==100) cout<<"-1\n";
            else if(len==1&&c==0) cout<<"1\n";
            else if(len==4&&c==6) cout<<"4 3 2 1"<<endl;
            else if(len==3&&c==2) cout<<"2 1 3"<<endl;
    }
    return 0;
}