M  n   h  n h ,   m  y   i n   l    t h i t   b   x u t 
 
 
 
 C  c h   t   t h u c   t  n h   n   c h o   t h   m c   h a y   t p   t i n : 
 
 B 1 :   C h n   t p   t i n   t h   m c   m u n   c  i   t   t h u c   t  n   n   
 
 B 2 : 