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

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

const int NMAX = 16;
int n, x[NMAX+1];

void afis(int k) {
    for (int i=1; i<=k; i++)
        g << x[i] << ' ';
    g << '\n';
}

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

int main()
{
    f >> n;
    backTracking(1);
    return 0;
}