#include <fstream>
using namespace std;

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

int N, anw[100];
bool used[100];

void Print (int k) {
    for (int i = 1 ; i <= k; ++ i) {
        out << anw[i] << " ";
    }
    out << '\n';
}

void Back (int k) {

    for (int i = 1 ; i <= N; ++ i) {
        if (i > anw[k-1]) {
            anw[k] = i;
            Print (k);
            Back (k + 1);
        }
    }
}

int main()
{
    in >> N;
    Back (1);
    return 0;
}