#include <fstream>
#define DMAX 20
using namespace std;
ofstream fout ("combinari.out");

int n, k, v[DMAX];
void citire();
void bkt (int);

int main()
{
    citire();
    bkt (1);
    fout.close();
    return 0;
}

void citire()
{
    ifstream fin ("combinari.in");
    fin>>n>>k;
    fin.close();
    return;
}

void bkt (int poz)
{
    int i;
    if (poz-1==k)
    {
        for (i=1; i<=k; ++i)
            fout<<v[i]<<" ";
        fout<<"\n";
        return;
    }
    for (i=v[poz-1]+1; i<=n-k+poz; ++i)
    {
        v[poz]=i;
        bkt (poz+1);
    }
    return;
}