#include <fstream>
using namespace std;
ifstream f("submultimi.in");
ofstream g("submultimi.out");
int v[17], n;
void back()
{
    int i;
    for(i = 1; i <= v[v[0]]; ++ i)
        g << v[i] << " ";
    if(v[0]) g << "\n";
    for(i = v[v[0]] + 1; i <= n; ++ i)
    {
        v[++ v[0]] = i;
        back();
        v[v[0]] = 0;
        v[0] --;
    }
}
int main()
{
    f >> n;
    back();
    return 0;
}