#include<fstream>
#define dmax 20
using namespace std;
ifstream in("combinari.in");
ofstream out("combinari.out");

int n, k, stack[dmax];

void comb(int id)
{
	if(id == k+1)
	{
		for(int i=1; i<=k; i++)
			out<<stack[i]<<" ";
		out<<'\n';
	}
	else
	{
		for(int i=stack[id-1]+1; i <= n; i++)
		{
			stack[id] = i;
			comb(id+1);
		}
	}
}	

int main()
{
	in>>n>>k;
	in.close();
	
	comb(1);
	
	out.close();
	return 0;
}