[Bored at work] Intelligence test part 2

[karohemd]

Remember the one with first letters and numbers?
There's a new one.
ETA: Got them all now (thanks to dougs and djonma for the hints).

Comments

[reindeerflotila.livejournal.com]

brainmeats muttered heptagram at me but there are two types so pooey to me.

[crocodilewings.livejournal.com]

Having just discovered what it is by some mild spoilerage, I certainly wouldn't class it as common knowledge.