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#include <bits/stdc++.h>
#define all(x) x.begin(),x.end()
#define CLR(i,a) memset(i,a,sizeof(i))
#define fi first
#define se second
#define pb push_back
#define SZ(a) ((int) a.size())
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef __int128 i128;
typedef pair<ll,ll> pll;
typedef array<ll,3> arr;
typedef double DB;
typedef pair<DB,DB> pdd;
typedef pair<ll,bool> plb;
constexpr ll MAXN=static_cast<ll>(1e6)+10,INF=static_cast<ll>(5e18)+3;
constexpr ll mod=static_cast<ll>(1e9)+7;
ll N,M,T;
bool isPrime[MAXN];
vector<ll> primes;
set<ll> perm;
bool inAns[MAXN];
inline ll ceilDiv(ll x,ll cnt){
return ceil(x*1.0l/cnt);
}
inline void genPrime(){
for(int i=2;i<=MAXN-5;++i){
isPrime[i]=true;
}
for(int i=2;i*i<=MAXN-5;++i){
if(isPrime[i]){
for(int j=2*i;j<=MAXN-5;j+=i){
isPrime[j]=false;
}
}
}
for(int i=2;i<=MAXN-5;++i){
if(isPrime[i]) primes.pb(i);
}
}
inline void solve(){
cin>>N;
vector<ll> ans;
perm.clear();
for(int i=1;i<=N;++i){
perm.insert(i);
inAns[i]=false;
}
ll cnt=1,sum=0;
ll curP=*lower_bound(all(primes),N/2);
while(true){
ll l=(curP-1)*cnt-sum;
auto it=perm.lower_bound(l+1);
if(it==perm.end()) break;
ll num=*it;
if(ceilDiv(num+sum,cnt)==curP){
ans.pb(num);
++cnt;
sum+=num;
inAns[num]=true;
perm.erase(it);
}else{
break;
}
}
for(int i=0;i<ans.size();++i){
cout<<ans[i]<<" ";
}
for(int i=1;i<=N;++i){
if(!inAns[i]) cout<<i<<" ";
}
cout<<"\n";
}
int main()
{
ios::sync_with_stdio(false);
cin.tie(0);cout.tie(0);
cin>>T;
genPrime();
while(T--){
solve();
}
return 0;
}
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