︽    ︾
    2ml        
        3.   5g   5g   5g   3g    
   
 1g   1g   1g   1g    
1g   1g   1g   1g     0.5g   
       2.   3g    1g  1g    1g   
   
       1.   5g   5g   5g    10g  
               
7~10     
           
            
            
            
            
           
           
            
           
                
    
        
           
           
                