#include<stdio.h>
int n,nr=-1;
int st[22];

void back()
{
	int i;
	for(i=1;i<=st[0];i++)
		printf("%d ",st[i]);
	if(st[0])
		printf("\n");
	for(i=st[st[0]]+1;i<=n;i++)
	{
		st[++st[0]]=i;
		back();
		st[st[0]]=0;
		st[0]--;
	}
}

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