#include <fstream>

using namespace std;

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

int a[20],n,k,h;

void scrie()
{
    int i;
    for (i=1;i<=k;i++)
    g<<a[i]<<" ";
    g<<'\n';
}

void combinari (int h)
{
    int i;
    if (h==k+1) scrie();
    else
      for (i=a[h-1]+1;i<=n-k+h;i++)
      {
          a[h]=i;
          combinari(h+1);
      }
}


int main()
{

    f>>n>>k;
    combinari(1);
    return 0;
}