        ͩ   ɥ         
     һ          ˣ    
 ͩ Ҷ      Ϸ ˵ Ҫ    Ϊ     
 ֪       ѵ     Ϸ      
     λ        Ȼ    ڡ 
 ǩ Ȱ           Ҫ     