#include <fstream>

using namespace std;

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

const int MAXN = 16;

int sol[MAXN + 1];

int bck(int k, int n, int m) {
	if (k > m) {
		for (int i = 1; i <= m; ++ i) out << sol[i] << ' ';
		out << '\n';
	}
	else {
		for (int i = sol[k - 1] + 1; i <= n; ++ i) {
			sol[k] = i;
			bck(k + 1, n, m);
		}
	}
}

int main() {
	int n;
	in >> n;

	for (int i = 1; i <= n; ++ i) {
		bck(1, n, i);
	}

	return 0;
}