t=int(input())
for i in range(t):
n=int(input())
if n==2 :
print(-1)
else:
cnt=1
for j in range(n):
for q in range(n):
if cnt<=n*n :
print(cnt,end=' ')
cnt+=2
else:
cnt=2
print(cnt, end=' ')
cnt+=2
print(" ") #include <bits/stdc++.h>
using namespace std;
int main () {
ios_base :: sync_with_stdio(false);
int t;
cin>>t;
while(t--){
int n;
cin>>n;
if(n==2) cout<<-1<<endl;
else{
for(int i=1; i<=n*n; i+=2) cout<<i<<' ';//1...9->1,3,5,7,9
for(int i=2; i<=n*n; i+=2) cout<<i<<' ';//2...9->2,4,6,8
cout<<endl;
}
}
return 0;
}727A - Transformation from A to B | 822B - Crossword solving |
1623A - Robot Cleaner | 884B - Japanese Crosswords Strike Back |
862B - Mahmoud and Ehab and the bipartiteness | 429A - Xor-tree |
1675C - Detective Task | 950A - Left-handers Right-handers and Ambidexters |
672B - Different is Good | 1C - Ancient Berland Circus |
721A - One-dimensional Japanese Crossword | 1715B - Beautiful Array |
60B - Serial Time | 453A - Little Pony and Expected Maximum |
1715A - Crossmarket | 1715C - Monoblock |
1512C - A-B Palindrome | 1679B - Stone Age Problem |
402A - Nuts | 792A - New Bus Route |
221A - Little Elephant and Function | 492C - Vanya and Exams |
1369B - AccurateLee | 892B - Wrath |
999A - Mishka and Contest | 727C - Guess the Array |
1625C - Road Optimization | 1715D - 2+ doors |
267A - Subtractions | 1582A - Luntik and Concerts |