#include <iostream>
#include <fstream>

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

int n, i, k, v[18];

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

void back (int p) {
    
    for (int i = v[p-1] + 1; i <= n; i++)
    {
        v[p] = i;
        if (p == k)     afisare();
        else back(p + 1);
    }
}

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