#include <iostream>
#include <fstream>
#include <vector>

using namespace std;

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

int n;
vector<int> v;
void back(int k)
{
    if (v.size()==k)
    {
        for (int i = 0; i < v.size(); i++)
            fout << v[i] << " ";
        fout << "\n";
    }
    for (int i = (v.size()==0 ? 1 : v[v.size()-1] + 1); i <= n; i++)
    {
        v.push_back(i);
        back(k);
        v.pop_back();
    }
}

int main()
{
    fin >> n;
    for (int i = 1; i <= n; i++)
        back(i);
    return 0;
}