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

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

int n, k, v[19];

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

int main()
{
    fin >> n;
    for (int i = 1; i <= n; ++i)
    {
        k = i;
        comb(1);
    }
    return 0;
}