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