Case types

Hi! While searching for cases online on the Supreme Court website I was given to choose 'Case Type' (along with case No. and Year). Options include, but not limited to, abbreviations such as A, AA, AAO, AB, ABA, AC, AFMC, AN, APP, ARBA et.al. Could someone kindly post a list of the expanded forms of these abbreviations? I did, what felt to me, an extensive search on the internet regarding the same but found no answers. Thanks.