#include <fstream>
using namespace std;

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

const int N=19;
int n,k,sol[N];

void write()
{
	int i;
	for(i=1;i<=k;i++)
		out<<sol[i]<<" ";
	out<<"\n";
}

void bkt(int p)
{
	int i;
	if(p-1==k)
	{
		write();
		return;
	}
	for(i=sol[p-1]+1;i<=n-k+p;i++)
	{
		sol[p]=i;
		bkt(p+1);
	}
}

int main()
{
	in>>n>>k;
	bkt(1);
	return 0;
}