Engine Variations

could someone do me a favor and list all of the different variation engine types for th B16 and B18.. and what i mean is the letters and numbers following the engine type... like A1 or C5 or however many types there are?

http://jasm.smugmug.com/photos/5016322-L.jpg
http://jasm.smugmug.com/photos/5016323-M.jpg

These were posted on here a while back. Not sure if they are completely accurate, but i think they are for the most part.

thanks.. i was trying to a search earlier and find it.. but nothing came up