#include <fstream>

using namespace std;

ifstream in("combinari.in");
ofstream out("combinari.out");

int v[20], n, k;

void back(int poz)
{
    if(poz == k + 1)
    {
        for(int i = 1;i <= k;++i)
        {
            out << v[i] << " ";
        }
        out << "\n";
    }
    else
    {
        for(int i = v[poz - 1] + 1;i <= n;++i)
        {
            v[poz] = i;
            back(poz + 1);
        }
    }
}

int main()
{
    in >> n >> k;
    back(1);
}