#include <stdio.h>
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
using mint = modint998244353;
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf32 1000000001
#define Inf64 1000000000000000001


int main(){
	
	int _t;
	cin>>_t;
	rep(_,_t){
		int N,M;
		cin>>N>>M;
		M--;
		vector<int> ans(N,-1);
		ans[M] = 0;
		set<pair<int,int>> s;
		set<int> pos;
		pos.insert(M);
		if(M!=0)s.emplace(-(M),0);
		if(M!=N-1)s.emplace(-(N-1-(M)),N-1);

		for(int i=1;i<N;i++){
			auto x = *s.begin();
			s.erase(s.begin());
			ans[x.second] = i;
			//cout<<x.first<<' '<<x.second<<endl;
			{
				auto it = pos.lower_bound(x.second);
				if(it==pos.end()){
				}
				else{
					int d = (*it) - x.second;
					d /= 2;
					if(d!=0){
						s.emplace(-d,x.second+d);
					}
					
				}
			}
			{
				auto it = pos.lower_bound(x.second);
				if(it==pos.begin()){
				}
				else{
					it--;
					int d = x.second - (*it);
					d /= 2;
					if(d!=0){
						s.emplace(-d,(*it)+d);
					}
					
				}
			}
			pos.insert(x.second);
			
		}
		rep(i,N){
			if(i!=0)cout<<' ';
			cout<<ans[i]+1;
		}
		cout<<endl;
	}
	return 0;
}