#include <stdio.h>
using namespace std;
int n,ord;
int A[21];

FILE * f,*g;

void bt(int k)
{
	int i,ok,j;
	if (k==ord)
	{
		for (i=1;i<=k;i++)
			fprintf(g,"%d ",A[i]);
		fprintf(g,"\n");
	}
	else
		for (i=1+A[k];i<=n-ord+k+1;i++)
		{
				A[k+1]=i;
				bt(k+1);
		}
}

int main()
{
	
	f=fopen("submultimi.in","r");
	g=fopen("submultimi.out","w");
	fscanf(f,"%d",&n);
	for (ord=1;ord<=n;ord++)
		bt(0);
	fclose(f);
	fclose(g);
	return 0;
}