#include <bits/stdc++.h>
using namespace std;

#define pb push_back
#define f first
#define s second
#define ll long long


ll MOD = 1000000007;

int main(){
	ll t;
	cin>>t;
	while(t--){
		ll n;
		cin>>n;
		int c =1;
		if(n==1)cout<<1<<endl;
		if(n==2)cout<<-1<<endl;
		if(n>=3){
			for(int i=0;i<n;i++){
				for(int j=0;j<n;j++){
					cout<<c<<" ";
					c+=2;
					if(c>n*n)c=2;
				}
				cout<<endl;
			}
		}
	}
}