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

int main() {
	int N; cin >> N;
	for (int i = 0; i < N; i++) {
		cout << i % N + 1 << endl;
		for (int j = 1; j < N; j++) {
			cout << " " << (i + j) % N + 1;
		}
		cout << endl;
	}
}