#include <iostream>

using namespace std;

int main()
{
    int n,a[25][25],i,j,v=0;
    cin>>n;
    for(i=1;i<=n;i++){
        for(j=1;j<=n;j++){
            if(i==j) a[i][j]=0;
            else a[i][j]=n-v;
            v++;
            cout<<a[i][j]<<" ";
        }
        cout<<endl;
        v=0;
    }
    return 0;
}