#include <bits/stdc++.h>

using namespace std;

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

int n, st[20];

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

void Back(int top)
{
    if (top > 1)
        Afisare(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;
}