Hmmm ?

Personally I would say the top left one is
NOT Genga and the rest are, The yellow
ones are Shusei Genga (retouch).

BTW : Guess what "Key cel" is in Japanese ?

"Genga Number!!" Of course you have to say
Number in Japanese Accent  "Nanbaa". ^_^

So with that said every Genga Number or
Key cel should have Gengas for it :) So go
out there and find them !!

Well, Anyway this is what I have been taught
and believe to be correct. If you care to differ
that is your choice.

-Stephen