Hello, VD means to go to the guest room (no dirty room), VC means to be clean and buy a house, and OD means to live in a dirty room, that is, an unfinished house. But it may also be pre-leaving the room. It depends on the departure time on the computer.

VC:vacant clean Vacant Room

VD:vacant dirty Vacant Room

OC:occupide clean Guest Room

OD:occupide dirty Guest Room

HU:house use. Hotel room for personal use.