#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
int a[17], n; //1, 2, 3, ..., n
void afisare (int l) {
    for (int i=1; i<=l; ++i) {
        fout << a[i] << ' ';
    }
    fout << '\n';
}
void backtr(int k) {
    for (int i=a[k-1]+1; i<=n; ++i) {
        a[k]=i;
        afisare(k);
        backtr(k+1);
    }

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