#include <fstream>

#define NMAX 17

using namespace std;

ifstream f("submultimi.in");
ofstream g("submultimi.out");

int n, rez[NMAX];

void backTrack(int k)
{
    if(k != 0)
    {
        for(int i = 1; i <= k; i++)
            g << rez[i] << " ";
        g << "\n";
    }

    for(int i = rez[k] + 1; i <= n; i++)
    {
        rez[k + 1] = i;

        backTrack(k + 1);

        rez[k + 1] = 0;
    }
}

int main()
{
    f >> n;

    backTrack(0);
    return 0;
}