#include <fstream>
using namespace std;
ifstream in ("submultimi.in");
ofstream out ("submultimi.out");
int n, x[17];

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

void back(int k)
{
    for (int i = x[k-1] + 1; i <= n; i++)
    {
        x[k] = i;
        if (k <= n) afis(k);
        back(k+1);
    }
}

int main()
{
    in >> n; back(1);
    out.close(); return 0;
}