#include <iostream>
#include <cstring>
#include <fstream>

using namespace std;

ifstream fin("submultimi.in");
ofstream fout("submultimi.out");

int n;
int x[17];
int viz[17];


void Afisare(int k)
{
    for(int i = 1; i <= k; i++)
        fout << x[i] << " ";
    fout << "\n";
}

void Back(int k)
{
    for(int i = x[k-1]+1; i <= n; i++)
       ///  if(viz[i] == 0)
         {
             x[k] = i;
             Afisare(k);
             Back(k+1);

         }
}

int main()
{
    fin >> n;
    Back(1);
    return 0;
}