#include <bits/stdc++.h>
using namespace std;
#define reps(i,s,n) for(int i = s; i < n; i++)
#define rep(i,n) reps(i,0,n)
#define Rreps(i,n,e) for(int i = n - 1; i >= e; --i)
#define Rrep(i,n) Rreps(i,n,0)
#define ALL(a) a.begin(), a.end()
#define fi first
#define se second
typedef long long ll;
typedef vector<ll> vec;
typedef vector<vec> mat;

ll N,M,H,W,Q,K,A,B;
string S;
//const ll MOD = 998244353;
const ll MOD = (1e+9) + 7;
typedef pair<ll, ll> P;
const ll INF = (1LL<<58);


int main(){
    cin>>N;
    mat ans(N, vec(N));
    rep(i,N){
        ll now = i + 1;
        for(int j = i; j < N + i; ++j){
            ans[i][j%N] = now--;
            if(now == 0) now = N;
        }
    }
    rep(i,N){
        rep(j,N) cout<<ans[i][j]<<" \n"[j == N - 1];
    }
}