#include<bits/stdc++.h>
using namespace std;
int N,K, a[30]; 
void back(int poz, int k)
{
	if(k > K)
	{
		for (int i = 1; i <= K; i++)
		{
			cout << a[i] << " ";
		}
		cout << "\n";
		return;	
	}
	for(int i = poz ; i <= N - K + k; i++)
	{
		a[k] = i;
		back(i+1, k+1);
	}
}
int main()
{
	ifstream cin("combinari.in");
	ofstream cout("combinari.out");
	cin >> N >> K;
	back (1,1);
}