#include<fstream>
using namespace std;
int N,K, a[30]; 
ifstream cin("combinari.in");
ofstream cout("combinari.out");
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()
{

    cin >> N >> K;
    back (1,1);
}