#include<iostream>
using namespace std;
int main(){
    int n,x=1;
    while(cin>>n,n){
        for(int i=1;i<=n;i++){
            int k=i;
            for(int j=1;j<=n;j++){
                if(i<=j) cout<<x++<<" ";
                else cout<<k--<<" ";}
            cout<<endl;
            x=1;}
        cout<<endl;}
    return 0;
}