"Initial" Clan confusion (ha ha, a pun)

So, the last thing I want to do is accidentally insult a server clan in my first days, and I have given the Clan System rules a good read, even though they aren't too big a deal until I hit level 40. Always pays to be polite, especially when the other guy has a bigger gun, and a lot of friends with the same gun. However, I am having trouble finding what some of the clan's initials stand for. Also, while the rules give a vague idea what each clan stands for, there is no entry I am able to locate listing if a clan is a police clan, merc clan, lepidopterist clan, etc.. If someone would be so kind as to either list these or direct me to the thread I was unable to find, I would be terribly grateful.
Thanks again guys, you rock.

Thanks guys, was exactly what I was looking for.