 CONT: Not only do the room numbers change from episode to episode,  the whole upstairs layout changes. For instance in the episodes "The  Kipper and the Corpse" and "Communication Problems", at the top of  the stairs there are three rooms on the right and a room on the  left. Yet in "The Psychiatrist" the room on the left seems to become  a broom cupboard where Basil spends the night after Sybil locks him  out.