#include<fstream>
#include<iostream>
using namespace std;
//ifstream in("combinari.in");
ofstream out("combinari.out");
int s[21];
int n,k;
FILE * pFile;
void back(int g)
{
	int i;
	for(i=s[g-1]+1;i<=n;i++)
	{
		s[g]=i;
		if(g==k)
		{
			for(int i=1;i<=k;i++)//inlocuieste  i
				out<<s[i]<<" ";
				out<<endl;
		}
			else
				back(g+1);
	}
}
int main()
{
	ifstream in("combinari.in");
	in>>n>>k;
	in.close();
	pFile=fopen ("combinari.out","w");
	back(1);
	return 0;
}