#include <fstream>
#define in "combinari.in"
#define out "combinari.out"
#define siz 19

using namespace std;

ifstream f(in);
ofstream g(out);

short N, K, sol[siz];

void Afis()
{
    for(short i = 1; i <= K; ++i)
        g << sol[i] << ' ';
    g << '\n';
}

void back(short p)
{
    for(short i = sol[p - 1] + 1; i <= N; ++i)
    {
        sol[p] = i;
        p == K ? Afis() : back(p + 1);
    }
}

int main()
{
    f >> N >> K;
    back(1);
    return 0;
}