#include <bits/stdc++.h>

using namespace std;
void fast_io() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
}

void solve() {
    int n;
    long long x;
    cin >> n >> x;
    vector<long long> ans(n);
    for (int i = 0; i < n; i++) {
        long long mi = (long long)(n - i) * (n - i + 1) / 2;
        if (mi > x) {
            cout << -1 << "\n";
            return;
        }
        ans[i] = (x + mi + n - i) / (n - i + 1);
        x -= ans[i];
    }
    for (int i = 0; i < n; i++) {
        cout << ans[i] << (i + 1 == n ? "\n" : " ");
    }
}
int main() {
    fast_io();
    int t;
    cin >> t;
    for (; t--;) {
        solve();
    }
}