Help for a rule or command

[ChiIIerr]

Final goal: brute-forcing an md5 or sha1 hash in the following format
"wordlistA, wordlistA, worldlistB,"

Essentially, I have two wordlists that I want to try every combination of using them in all three slots as shown above. 
Example: A1, A1, B1.......A1, A1, B2........until A1, A2, B1 and so on

Is this 1) possible to accomplish with hashcat? and 2) if so how?

Thanks a million in advance for any response to this!