#include<cstdio>
     
int N, K, sol[20];

void afisare()
{
  for(int i=0; i < K; i++)
    printf("%d ",sol[i]);
  printf("\n");
}
     
void back(int poz ,int k)
{
  if(k == K)
  {
    afisare();
    return ;
  }
  
  for(int i= poz; i<= N - K + k+1; i++)
  {
    sol[k]=i;
    back(i+1,k+1);
  }
} 
     
int main()
{
  freopen("combinari.in","r",stdin);
  freopen("combinari.out","w",stdout);
  scanf("%d %d",&N,&K);
  back(1,0);
  return 0;
}