#include<bits/stdc++.h>

using namespace std;

//#define MOD 998244353
//const int MOD = 1000000007;

//const long INF = 1000000000000000000;

//constexpr long long INF = (1LL << 60);

int main(){
	int T;
	cin >> T;

	for(int q = 0; q < T; q++){
		long long N, X;
		cin >> N >> X;
		long long sankaku = (N*(N+1))/2;
		if(sankaku > X){
			cout << -1 << endl;
			continue;
		}
		long long soko = (X - sankaku) / N;
		long long amari = (X - sankaku) % N;

		for(int i = 0; i < N; i++){
			long long ans = soko + N - i;
			if(amari > i){
				ans++;
			}
			cout << ans << " ";
		}
		cout << endl;
	}
}