G.cpp

//#pragma GCC optimize "trapv"
#include<bits/stdc++.h>
#define ll long long 
#define fab(a,b,i) for(int i=a;i<b;i++)
#define pb push_back
#define db double
#define mp make_pair
#define endl "\n"
#define f first
#define se second
#define all(x) x.begin(),x.end()
#define MOD 1000000007
#define quick ios_base::sync_with_stdio(false);cin.tie(NULL)
using namespace std;

int main()
{ quick;
#ifndef ONLINE_JUDGE
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif
	int t;
	cin>>t;
	while(t--)
	{
		ll int n;
		cin>>n;
		if(n<4)
		{
			cout<<-1<<endl;
			continue;
		}
		for(int i=n-(n%2==0);i>0;i-=2)
			cout<<i<<" ";
		cout<<4<<" 2"<<" ";
		fab(6,n+1,i)
		{
			cout<<i<<" ";
			i++;
		}
		cout<<endl;
	}
	

	return 0;
}