#include<cstdio>
const short N=19;
short k,n,sol[N];
void prelucrare(int k)
{
	if(k>0)
	{
		for(int i=1;i<=k;i++)
		printf("%hd ", sol[i]);
		printf("\n");
	}
}
void bkt(int p)
{

	prelucrare(p-1);
	for(int 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("%hd", &n);
	bkt(1);
}