#include<bits/stdc++.h>
#include<atcoder/all>
#define rep(i,n) for(int i=0;i<n;i++)
using namespace std;
using namespace atcoder;
typedef long long ll;
typedef vector<int> vi;
typedef vector<long long> vl;
typedef vector<vector<int>> vvi;
typedef vector<vector<long long>> vvl;
typedef long double ld;
typedef pair<int, int> P;

ostream& operator<<(ostream& os, const modint& a) {os << a.val(); return os;}
template <int m> ostream& operator<<(ostream& os, const static_modint<m>& a) {os << a.val(); return os;}
template<typename T> istream& operator>>(istream& is, vector<T>& v){int n = v.size(); assert(n > 0); rep(i, n) is >> v[i]; return is;}
template<typename U, typename T> ostream& operator<<(ostream& os, const pair<U, T>& p){os << p.first << ' ' << p.second; return os;}
template<typename T> ostream& operator<<(ostream& os, const vector<T>& v){int n = v.size(); rep(i, n) os << v[i] << (i == n - 1 ? "\n" : " "); return os;}
template <typename T> ostream& operator<<(ostream& os, const vector<vector<T>>& v){int n = v.size(); rep(i, n) os << v[i] << (i == n - 1 ? "\n" : ""); return os;}

void solve(){
	int n;
	long long x;
	cin >> n >> x;
	vl ans(n, 1);
	x -= (long long) n * (n + 1) / 2;
	if(x < 0){
		cout << "-1\n";
		return;
	}
	for(int y = n; y > 0; y--){
		long long z = x / y;
		ans[y - 1] += z;
		x -= z * y;
	}
	for(int i = n - 2; i >= 0; i--){
		ans[i] += ans[i + 1];
	}
	cout << ans;
}

int main(){
	int t;
	cin >> t;
	rep(_, t) solve();
	
	return 0;
}