#include <stdio.h>
#define N 17
int n,sol[N];
void afiseaza(int k)
{
	int i;
	for (i=1; i<=k; i++)
		printf("%d ",sol[i]);
	printf("\n");
}
void back(int k)
{
	if (k==n+1)
		return ;
	int i;
	for (i=sol[k-1]+1; i<=n; i++)
	{
		sol[k]=i;
		afiseaza(k);
		back(k+1);
	}
}
int main()
{
	freopen("submultimi.in","r",stdin);
	freopen("submultimi.out","w",stdout);
	scanf("%d",&n);
	back(1);
	return 0;
}