#include<bits/stdc++.h>
using namespace std;
int main(){
	char a[15][15];
	int n,i,j;
    cin>>n;
    for(i=1;i<=n;i++){
        for(j=1;j<=n;j++){
            if(i+j<=6) a[i][j]=i+j+63;
            else a[i][j]=i+j+58;
        }
    }
    for(i=1;i<=n;i++){
        for(j=1;j<=n;j++){
            cout<<setw(3)<<a[i][j];
        }
        cout<<endl;
    }
}
/**************************************************************
	Problem: 1194
	User: yangjunwen
	Language: C++
	Result: Wrong Answer
****************************************************************/