#define _USE_MATH_DEFINES
#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <queue>
#include <math.h>
#include <cmath>
#include <stack>
#include <map>
#include <set>
#include <numeric>
#include <iomanip>
#include <climits>
#include <functional>
#include <cassert>
#include <tuple>
using namespace std;
using ll = long long;

int T;

int main() {
    
    cin >> T;
    while(T--) {
        int N;
        ll X;
        cin >> N >> X;
        vector<ll> ans(N);
        ll sum = 0;
        for(int i = 0; i < N; ++i) {
            ans[i] = N-i;
            sum += N-i;
        }

        if(sum > X) {
            cout << -1 << endl;
            continue;
        }

        ll q = (X-sum)/N;
        ll r = (X-sum)%N;

        for(int i = 0; i < N; ++i) ans[i] += q;
        for(int i = 0; i < r; ++i) ans[i]++;

        for(int i = 0; i < N; ++i) cout << ans[i] << " ";
        cout << endl;
    }

}