#include <bits/stdc++.h>
#define N 16
using namespace std;

ifstream fin("submultimi.in");
ofstream fout("submultimi.out");



int n, x[N + 5];

void Afisare(int k)
{
    for(int i = 1; i <= k; ++i)
        fout << x[i] << " ";
    fout << "\n";
}

void Back(int k)
{
    for(int i = x[k - 1] + 1; i <= n; ++i)
    {
        x[k] = i;
        Afisare(k);
        if(k < n) Back(k + 1);
    }
}


int main()
{
    fin >> n;
    Back(1);

    return 0;
}