#include<fstream>
#include <iostream>
using namespace std;

int x[20],n,k;

ofstream fout ("combinari.out");
void Combinari(int p)
{ 
	if (p==k+1) 
		{
		 for (int i=1;i<=k;i++) 
			 fout<<x[i]<<" ";
		 fout<<"\n";
		}
	else 
		for (int i=x[p-1]+1;i<=n-k+p;i++)
		{
			x[p]=i;
			Combinari(p+1);
		}
}

int main ()
{
	ifstream fin ("combinari.in");
	fin>>n>>k;
	fin.close();
	Combinari(1);
	fout.close();
	return 0;
}