| Value | Category | 
                                    
                    
                        | A |  | 
                                    
                    
                        | AB |  | 
                                    
                    
                        | ABC |  | 
                                    
                    
                        | ABCD |  | 
                                    
                    
                        | ABCDEFG |  | 
                                    
                    
                        | ABCDG |  | 
                                    
                    
                        | AC |  | 
                                    
                    
                        | ACD |  | 
                                    
                    
                        | AD |  | 
                                    
                    
                        | B |  | 
                                    
                    
                        | BC |  | 
                                    
                    
                        | BD |  | 
                                    
                    
                        | BDE |  | 
                                    
                    
                        | BFG |  | 
                                    
                    
                        | BG |  | 
                                    
                    
                        | C |  | 
                                    
                    
                        | CD |  | 
                                    
                    
                        | CDF |  | 
                                    
                    
                        | CDG |  | 
                                    
                    
                        | CE |  | 
                                    
                    
                        | CFG |  | 
                                    
                    
                        | D |  | 
                                    
                    
                        | DF |  | 
                                    
                    
                        | E |  | 
                                    
                    
                        | EF |  | 
                                    
                    
                        | F |  | 
                                    
                    
                        | FG |  | 
                                    
                    
                        | G |  | 
                                    
                    
                        | W |  | 
                                    
                    
                        | Z |  | 
                            
            Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.