#include <stdio.h>
#include <atcoder/all>
#include <bits/stdc++.h>
using namespace std;
using namespace atcoder;
using mint = modint998244353;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf32 1000000001
#define Inf64 4000000000000000001
long long sum(long long n){
	return n*(n+1)/2;
}
int main(){
	
	int _t;
	cin>>_t;
	rep(_,_t){
		long long N,X;
		cin>>N>>X;
		vector<long long> ans(N);
		if(sum(N)>X){
			cout<<-1<<endl;
			continue;
		}
		rep(i,N){
			long long ii = N-i;
			long long rem = X - sum(ii);
			ans[i] = ii + (rem+ii-1)/ii;
			X -= ans[i];
		}
		rep(i,N){
			if(i!=0)cout<<' ';
			cout<<ans[i];
		}
		cout<<endl;
	}
	return 0;
}