#include<stdio.h>

int n, m, sol[20];

void scrie(){
	for (int i = 1; i <= m; ++i)
		printf("%d ", sol[i]);
	printf("\n");
}

void back(int k)//completeaza elem de pe poz k din sol
{
	if (k == m + 1)
	{
		scrie();
		return;
	}
	for (int i = 1 + sol[k - 1]; i <= n - m + k; ++i)//aleg o valoare pt sol[k]
	{
		sol[k] = i;
		back(k + 1);
	}
}

int main()
{
	freopen("submultimi.in", "r", stdin);
	freopen("submultimi.out", "w", stdout);
	scanf("%d", &n);
	for (m = 1; m <= n; m++)
		back(1);
	return 0;
}