A stands for the left answer-possibility and B for the one on the right side. Enjoy!
A -> A -> A -A = M41 90MM; Code: IAMM41902020
A-> B -> B ->B = Strv S1; code: IAMSTRVS12020
A -> B -> A -> A = LT432; code: IAMLT4322020
A -> A -> B -> A = T26E5, code: IAMT26E52020
A- A -A -B = 50TP PRot, code: IAM50TP2020
A ->B -> B -> A = Skorpion G; code: IAMSKORPION2020
A -> A -> B -> B = Löwe; code: IAMLOWE2020
A B A B = Progetto; code: IAMPROGETTO2020
B-B-B-B = TS5; code: IAMTS52020
B-A-A-A = ELC EVEN90; code: IAMELCEVEN2020
B-A-A-B = T92LT; code: IAMT92LT2020
B-A-B-A = AMXm449; code: IAMM4492020
B-B-A-A = Mauerbrecher; code: IAMMAUERBRECHER2020
B-B-B-A = Kanonenjpz 105; code: IAMKJP1052020
B-B-A-B = Turtle Mk1; code: IAMTURTLE2020
B-A-B-B = SomuaSM; code: IAMSOMUA2020
Source: https://www.reddit.com/r/WorldofTanks/comments/g8zaca/rental_codes_for_premium_tanks_frontline_2020/
