#include<fstream>
#include<iostream>
using namespace std;
ifstream fin ("combinari.in");
ofstream fout ("combinari.out");

int n, k, st[20];

void Afisare()
{
  int i;
  for (i=1; i<=k; i++)
    fout << st[i] << " ";
  fout << "\n";
}

void Back(int top)
{
  int i;
  if (top == k+1) Afisare();
  else 
    for (i=st[top-1]+1; i<=n-k+top; i++)
      {
         st[top] = i;
         Back(top+1);
      }

}

int main ()
{
  fin >> n >> k;
  Back(1);
  return 0;
}