What kind of item do you have now?
Is the symbol which you say an electric bulb?
I cannot speak English well,
and it may not be possible for advice...
But, from the item which you have, I may advise it :)
nevermind, i can read your english ^^
i got the card with green symbols of star, moon, something like that~
i don't know what do they represent for~
i cannot get the password of "÷" room....
The position of the room is written to the green symbol card.
2●5 rooms and 2●6 rooms are continuance rooms...
○ and 52 rooms are continuance rooms, too...^^