#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

int main() {
  cin.tie(nullptr)->sync_with_stdio(false);
  int n;
  cin >> n;
  vector Grid(n, vector<int>(n));
  rep(i, n) {
    int cur = i;
    for (int j = i + n; j > i; --j) {
      Grid[i][j % n] = (cur++ % n) + 1;
    }
  }
  rep(i, n) {
    rep(j, n) cout << Grid[i][j] << ' ';
    cout << '\n';
  }
  return 0;
}