#include <iostream>
#include <fstream>
#define nmax 101
using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
int n,sol[nmax];
void afisare(int k)
{
    for(int i =1 ; i <= k ; i++)
        fout<<sol[i]<<" ";
    fout<<endl;
}
void answer(int k)
{

    for(int i = sol[k-1]+1 ; i <= n ; i++)
    {
        sol[k]=i;
        afisare(k);
        answer(k+1);
    }
}

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