#include <fstream>
#include <vector>
#define INFILE "combinari.in"
#define OUTFILE "combinari.out"
using namespace std;

ifstream fin(INFILE);
ofstream fout(OUTFILE);

void back(vector<int> &v, int n, int k)
{
	if (v.size() == k) {
		for (vector<int>::iterator it = v.begin(); it != v.end(); ++it)
			fout << *it << " ";
		fout << endl;
		return;
	}
	int first = v.size() > 0?v[v.size()-1]:1;
	for(int i = first; i<=n; ++i)
	{
		bool contains = false;
		for(vector<int>::iterator it = v.begin(); it != v.end(); ++it)
			if (*it >= i)
				contains = true;
		if (!contains) {
			v.push_back(i);
			back(v, n, k);
			v.pop_back();
		}
	}
	
}

int main()
{
	int n,k;
	fin >> n >> k;
	vector<int> v;
	back(v, n, k);
	fin.close();
	fout.close();
	return 0;
}