#include<stdio.h>
int sol[20],n;
void prelucrare (int x)
{
	int i;
	for (i=1;i<=x;i++)
	{
		printf("%d ",sol[i]);
	}
	printf("\n");
}
void bkt (int p)
{
	int i;
	if (p!=1)
		prelucrare(p-1);
	for (i=1+sol[p-1];i<=n;i++)
	{
		sol[p]=i;
		bkt(p+1);
	}
}
int main ()
{
	freopen("submultimi.in","r",stdin);
	freopen("submultimi.out","w",stdout);
	scanf("%d",&n);
	bkt(1);
	return 0;
}