#include <iostream>
#include <fstream>
using namespace std;

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

int sol[17];

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

void bkt(int p, int n) {
    int i;

    if (p != 1) {
        afisare(p);
    }

    for (i = sol[p - 1] + 1; i <= n; i++) {
        sol[p] = i;
        bkt(p + 1, n);
    }
}

int main()
{
    int n;

    in >> n;

    bkt(1, n);

    return 0;
}