>>528996689
You will need to get more characters but first you train Gold Ship until you get one with 2 or 3* long, then train another character that can get Long A either innately or with inherits to get another one to finally have a single parent with 6-9* Long. Then you either do the entire process again for the 2nd parent or follow someone to borrow theirs until finally your Vodka starts the run with Long B.