#include<fstream>
using namespace std;
ifstream fin("combinari.in");
ofstream fout("combinari.out");

int st[30], n,k;

void Afisare()
{
   int i;
   for (i = 1; i <= k; i++)
	fout << st[i] << " ";
   fout << "\n";
}

void Back(int top)
{
	int i;
	if (top == k+1) Afisare();
	else for (i = st[top-1]+1; i <= n-k+top; i++)
		{
			st[top] = i;
			Back(top+1);
}
}

int main()
{
	fin >> n >>k;
	Back(1);
	fin.close();
	fout.close();
}