#include<fstream>
using namespace std;
FILE *fin=fopen("submultimi.out","w");
int x[20],n;
void afis(int k)
{
	for(int i=1;i<=k;i++)
		fprintf(fin,"%d ",x[i]);
	fprintf(fin,"\n");
}
void back(int k)
{
	for(int i=x[k-1]+1;i<=n&&k<=n;i++)
	{
		x[k]=i;
		if(k<=n)
			afis(k);
		back(k+1);
	}
}
int main()
{
	ifstream fin("submultimi.in");
	fin>>n;
	back(1);
	return 0;
}