Grouping based on a theoretical criterion: Naming convention
============================================================

	Identifier includes underscore:

                     1   last_ship          
 1                       pier_length        
                     1   days_to_beginning  
                 1       days_at_end        
         1               test_res           
             1           max_delta          
         1               day_nbr            

	Identifier includes capital letter:

                 1       numericValue       
 1                       largePowerOfTwo    
 1                       monthsToProcess    
     1                   currentMonth       
     1                   powerOfTen         
     1                   powerOfTwo         
             1           smallDigit         
         1               currDigit          

	Identifier in all capital letters:

         1               SHIP               
 1                       BASE               
 1                       NORM               
             1           CLOSEST            

	Identifier includes type information:

         1               CHAR_command       
             1           INT_greatest       
         1               INT_current        
                 1       INT_used           

	Identifier contains small letters only:

             1           longest            
                     1   preceding          
                     1   previous           
                     1   yesterday          
                 1       total              
     1                   count              
     1                   month