#include <cctype>
#include <string>
#include <cassert>
#include <iostream>
#include <algorithm>
#include <bits/stdc++.h>
#include <atcoder/all>
#include <math.h>

#define rep(i, n) for (int i = 0; i < (int)(n); i++)
using namespace std;
using namespace atcoder;
using ll = long long;
using p = pair<int,int>;
using mod = modint998244353;
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }

vector<pair<char,int>> RunLength(string s){
    vector<pair<char,int>> R;
    int n = s.size();
    int pre = 0;
    rep(i,n - 1){
        if(s[i + 1] != s[i]){
            R.push_back({s[i],i - pre + 1});
            pre = i + 1;
        }
    }
    if(pre != n)R.push_back({s[n - 1],n - pre});
    return R;
}

int op(int a,int b){return min(a,b);}
int e(){return (int)1e9;}
segtree<int,op,e> seg(1);

int n,m;
map<int,vector<int>> mp;
int bfs(int start,int goal){
    queue<int> Q;
    vector<int> seen(n,-1);
    Q.push(start);
    seen[start] = 0;
    while(Q.size()){
        int now = Q.front();Q.pop();
        for(int next:mp[now]){
            if(seen[next] != -1)continue;
            seen[next] = seen[now] + 1;
            Q.push(next);
            if(next == goal)Q = {};
        }
    }
    return seen[goal];
}

int main(){
    int t;cin >> t;
    while(t--){
        ll n,x;cin >> n >> x;
        if(n*(1LL + n) <= x*2){
            vector<ll> A(n);
            ll r = x;
            rep(i,n){
                A[i] = n - i;
                r -= n - i;
            }
            if(r >= n){
                ll p = r/n;
                rep(i,n){
                    A[i] += p;
                    r -= p;
                }
            }
            if(r >= 0);
            rep(i,r)A[i]++;
            rep(i,n)cout << A[i] << " ";
            cout << endl;
        }else{
            cout << -1 << endl;
        }
    }
}