#include <fstream>
#include <vector>
using namespace std;

ifstream fin("combinari.in");
ofstream fout("combinari.out");
vector<int> a;
int n, k;

void generate(int i)
{
	if (i > k) {
		for (int j = 1; j <= k; ++j)
			fout << a[j] << ' ';
		fout << '\n';
	}
	else {
		int maxj = n-k+i;
		for (int j = a[i-1]+1; j <= maxj; ++j) {
			a[i] = j;
			generate(i+1);
		}
	}
}

int main()
{
	fin >> n >> k;
	a.resize(k+1);
	generate(1);
	return 0;
}