#include <fstream>
using namespace std;

const int NMAX=16;

int n;
int j;

bool folosit[1+NMAX];

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

void back(int index)
{
    if(index > n)
    {
        for(j = 1; j <= n; j++)
        {
            if(folosit[j])
            {
                out << j << ' ';
            }
        }
        out<<'\n';
    }
    else
    {
        folosit[index] = true;
        back(index+1);
        folosit[index] = false;
        back(index+1);
    }
}

int main()
{
    in >> n;

    back(1);

    return 0;
}