You can see the full category hierarchy on the Category Map.
| 
 | 
 | 
| 2 beginning with B | BRUSH BRUSH (2) | 
| 2 beginning with C | COLOUR CHART COLOUR CHART (2) | 
| 2 beginning with P | POLYFILLA POLYFILLA (2) | 
| 2 beginning with S | SANDPAPER SANDPAPER (2) | 
| 8 apronyms in total | |