#include <iostream>
#include <fstream>
using namespace std;
ifstream fin ("submultimi.in");
ofstream fout ("submultimi.out");
int n,v[20];
void bkt (int k){
    int start = 0;
    if (k){
        for (int i = 0; i < k; ++i)
            fout << v[i] << " ";
        fout << '\n';
        start = v[k - 1];
    }
    for (int i = start + 1; i <= n; ++i){
        v[k] = i;
        bkt (k + 1);
        v[k] = 0;
    }
}
int main()
{
    fin >> n;
    bkt (0);
    return 0;
}