#include <bits/stdc++.h>
using namespace std;

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

int st[30], n;

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

void Back(int top)
{
    if (top > 1) Afis(top - 1);
    for (int i = st[top - 1] + 1; i <= n; i++)
        {
            st[top] = i;
            Back(top + 1);
        }
}

int main()
{
    fin >> n;
    Back(1);
    return 0;
}
//0, 1, 3-5, 7-18, 21, 22, 24-27, 29, 30, 34-36, 42, 44, 45, 47, 48, 51, 54, 56-58