Puzzel "Voeding en vertering"
 1    2             3     4          
                      5     
        6      7          8       
9                           
                   10        
11                     12        
        13                   
                       14    
  15                  16         
17                           
18                           
                         
     19               20        21   
22              23               
                         
       24                    
                  25         
       26                    
27        28            29           
     30                      
                         
    31