#include <fstream>
#include <vector>

using namespace std;

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

int n,k;
vector<int> sol;

void back(int i)
{
	if (sol.size() == k)
	{
		for (int j = 0; j < k; ++j)
			fout << sol[j] << " ";
		fout << "\n";
	}

	if (sol.size() == k || n-i+1 < k-sol.size())
		return;

	sol.push_back(i);
	back(i+1);
	sol.pop_back();
	back(i+1);
}

int main()
{
    fin >> n >> k;
    back(1);
}