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

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

int n;
int x[18];

void afis (int k) {
    for (int i = 1; i <= k; i++) {
        cout << x[i] << ' ';
    }
    cout << endl;
}

void back (int k) {
    if (k > 1)
        afis(k - 1);
    if (k > n) return;

    for (int i = x[k-1] + 1; i <= n; i++) {
        x[k] = i;
        back(k + 1);
    }
}

int main()
{
    f >> n;
    back(1);

    return 0;
}