#include <iostream>
#include <fstream>

using namespace std;

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

int v[20];

int n,k;

void combinari(int l)
{
  if (l==k){
    for (int i=1;i<=k;++i) g<<v[i]<<" ";
    g<<"\n";
  }
  else  for (int i=v[l]+1;i<=n;++i){
          v[l+1]=i;
          combinari(l+1);
        }
}

int main()
{
  f>>n>>k;

  combinari(0);

    return 0;
}