#include <bits/stdc++.h>

using namespace std;

typedef long long lo;
typedef pair< lo,lo > PII;

#define fi first
#define se second
#define mp make_pair
#define endl "\n"
#define int long long
#define pb push_back
#define fio() ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define FOR for(int i=1;i<=n;i++)
#define mid ((start+end)/2)

const lo inf = 1000000000000000000;
const lo KOK = 100000;
const lo LOG = 30;
const lo li = 100005;
const lo mod = 1000000007;

int n,m,b[li],a[li],k,flag,t,pw[li],vis[li],inddd;
int ans;

int32_t main(void){
	scanf("%lld",&t);
	pw[0]=1;
	for(int i=1;i<=100000;i++){
		pw[i]=pw[i-1]*2;
		if(pw[i]>=1000000000000000000){inddd=i;break;}
	}
	for(int i=inddd+1;i<=100000;i++){
		pw[i]=-1;
	}
	while(t--){
		scanf("%lld %lld",&n,&k);
		for(int i=1;i<=n;i++)vis[i]=1;
		for(int i=1;i<n;i++){
			//~ cout<<i<<" :: "<<k<<" :: "<<pw[n-i-1]<<endl;
			if(pw[n-i-1]!=-1 && pw[n-i-1]<k){vis[i]=0;k-=pw[n-i-1];}
		}
		if(k>1){printf("-1\n");continue;}
		int lst=0;
		for(int i=1;i<=n;i++){
			//~ cout<<vis[i]<<endl;
			if(vis[i]){
				for(int j=i;j>lst;j--)printf("%lld ",j);
				lst=i;
			}
		}
		printf("\n");
	}
	return 0;
}

