#include <iostream>
#include <fstream>
using namespace std;
ifstream f ("submultimi.in");
ofstream g ("submultimi.out");
int rasp[20];
int n;
void backtrack(int x,int ind)
{
    if(x!=0)
    {
        for(int i = 0;i<x;i++)
        {
            g << rasp[i]<< " ";
        }
        g << '\n';
    }
    if(x == n)
        return;
    for(int i = ind+1;i<=n;i++)
    {
        rasp[x] = i;
        backtrack(x+1,i);
    }
}
int main()
{
    f >> n;
    backtrack(0,0);
}