#include<bits/stdc++.h>
#define faster ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define db double
#define bo bool
#define vo void
#define ch char
#define fl float
#define ll long long
#define ull unsigned long long
#define str string
#define re return
#define all(x) (x).begin(),(x).end()
using namespace std;
int main()
{
	faster
	ll t,n,i;
	cin>>t;
	while(t--)
	{
		cin>>n;
		if(n%2==0) cout<<-1<<"\n";
		else
		{
			cout<<n<<" ";
			for(i=1;i<n;i++) cout<<i<<" ";
			cout<<"\n";
		}
	}
	re 0;
}
 

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