#include<stdio.h>
int x[20],n;

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

void back(int k)
{
	int i;
	for(i=x[k-1]+1;i<=n;i++)
	{
		x[k]=i;
		afisare(k);
		back(k+1);
	}
}

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