#include <fstream>
using namespace std;

ifstream in("combinari.in");
ofstream out("combinari.out");

short n,k,v[19];

void c(short i)
{
	short j;
	if(i>k)
	{
		for(j=1;j<=k;j++)
			out<<v[j]<<" ";
		out<<"\n";
	}
	else
	{
		for(j=v[i-1]+1;j<=n;j++)
		{
			v[i]=j;
			c(i+1);
		}
	}
}

int main ()
{
	in>>n>>k;
	c(1);
}