#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");

int v[16],n;
void BK(int k)
{
    if(k>n)return;
    for(int i=v[k-1]+1;i<=n;i++)
    {
        v[k]=i;
        for(int j=1;j<=k;j++)
        {
            fout<<v[j]<<" ";
        }
        fout<<'\n';
        BK(k+1);
    }
}

int main()
{
    fin>>n;
    BK(1);
    return 0;
}