#include <bits/stdc++.h>
using namespace std;
int main()
{
	int a[105][105];
	int n;
	cin>>n;
	int h=1;
	for(int i=n-1;i>=0;i--){
		for(int j=0;j<n;j++){
			a[i][j]=h;
			h++;
		}
	}
	for(int i=0;i<n;i++){
		for(int j=0;j<n;j++){
			cout<<setw(3)<<a[i][j];
		}
		cout<<endl;
	}
	return 0;
}

/**************************************************************
	Problem: 1185
	User: Teio
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/