Untitled

#define ll long long
#define pb push_back
#include <bits/stdc++.h>
using namespace std;

void solve(){
    ll n;
    cin>>n;
    if(n==2){
        cout<<-1<<"\n";
        return;
    }
    if(n%2==1){
        for(int i=1;i<=n;i++) cout<<i<<" ";
        cout<<"\n";
        return;
    }
    cout<<2<<" "<<3<<" "<<1<<" ";
    for(int i=4;i<=n;i++) cout<<i<<" ";
    cout<<"\n";
}


signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    int t;
	cin>>t;
	while(t--) solve();
}