来自倪军的问题
------THEIRSTUDENTS,THEFAMOUSTEACHERCAMEINTOTHEHALLAFOLLOWEDBFOLLOWEDBYCBEINGFOLLOWEDDHAVINGBEENOLLOWED
------THEIRSTUDENTS,THEFAMOUSTEACHERCAMEINTOTHEHALL
AFOLLOWED
BFOLLOWEDBY
CBEINGFOLLOWED
DHAVINGBEENOLLOWED

