#include <fstream>
using namespace std;
ifstream cin("submultimi.in");
ofstream cout("submultimi.out");
int n;
int main()
{
    int i,j,ct;
    cin>>n;
    ///i=inceput
    ///j=capat
    ///ct=contor
    for (i=1;i<=n;i++)
    {
     for (j=1;j<=n;j++)
      {
          for (ct=i;ct<=j;ct++)
              cout<<ct<<" ";
          if (ct==i) continue;
          else cout<<"\n";
      }
    }
    cin.close();
    cout.close();
    return 0;
}