#include <iostream>
#include <fstream>

using namespace std;

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

int n,k;

int v[100];

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

  else for (int k=v[l]+1;k<=n;++k){
          v[l+1]=k;
          combinari(l+1);
        }

}

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

  combinari(0);



}