# include <stdio.h>
int sol[19],n,k;

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

void bkt (int p)
{
	if(p==k+1)
	{
		afisare();
		return;
	}
	for(int i=sol[p-1]+1;i<=n-k+p;i++)
	{
		sol[p]=i;
	    bkt(p+1);
		
	}
	
}
int main()
{
	freopen("submultimi.in","r",stdin);
	freopen("submultimi.out","w",stdout);
	scanf ("%d",&n);
	for(int i=1;i<=n;i++)
	{
		k=i;
		
	    bkt(1);
	}
	return 0;
}