B m   p h  m   b t   k     
 
 t r  n h   n h n g   c h n g   n g i   v t 
 
 h  y   t h u   t h p     3   c  n h   c h i m 
 
 h o c   3   p h i   t i  u   , 
 
 x   c    i u   k   d i u   x y   r a 