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

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

int n, N, st[20];

void Write(){
    for(int i = 1; i <= N; i++)
        g << st[i] << ' ';
    g << '\n';
}

void bck(int k){
    if(k == N+1){
        Write();
        return;
    }
    for(int i = st[k-1]+1; i <= n-N+k; i++)
    {
        st[k] = i;
        bck(k+1);
    }
}

int main()
{
    f >> n;
    for(N=1; N <= n; N++)
        bck(1);
}