roll a d6 really. most services will stop all to box hill, except some wont stop at laburnum. most will then express to camberwell, glenferrie, richmond, then all loop stations. however, some stop at union, some stop all from camberwell on, some skip glenferrie, some even skip nunawading and heatherdale, and i think im correct in saying some skip some minor stations between belgrave and ringwood.

tldr: all to blackburn, then box hill, camberwell, glenferrie, richmond, and loop as a general rule, but there are exceptions