#include <fstream>
using namespace std;

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

int n,k;
short sol[20];

void back(int l)
{
  if(l==k) {
    for(int i = 1; i <= k; i++)
      out << sol[i] << ' ';
    out << '\n';
  }
  else
    for(int i = sol[l]+1; i <= n; i++)
    {
      sol[l+1]=i;
      back(l+1);
    }
}

int main()
{
  in >> n >> k;
  back(0);
  return 0;
}