#include <bits/stdc++.h>
using namespace std;
const int nmax = 30;
int n;
int v[nmax];

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

void backtr(int k)
{
    if(k > n + 1)
        return;

    if(k <= n + 1 && k > 1)
    {
        for (int i = 1; i < k; i++)
            fout << v[i] << " ";

        fout << "\n";
    }

    if(k <= n)
        for (int i = v[k - 1] + 1; i <= n; i++)
            v[k] = i, backtr(k + 1);
}

int main()
{
    fin >> n;
    backtr(1);

}