B1 B2 B3 HB1 AB1 HA1 A1
Is this the only train with an HA1 and HB1 coach? It certainly will be the only train with three different kinds of composite coaches: HA1 HB1 and AB1!
Makes more sense to combine these into H1, A2, B4! (H1, A1, A2, B1, B2, B3, B4) and use those composites for other, less patronized trains...
#trivia