The following two lines should be the same:
B1- B2- B2.1- B2.2-A2.3- B2.4-A2.5- A2.6- B3- B4-A5- A6- A7- A8-
B1- B2- B2.1- B2.2-A2.3- B2.4-A2.5- A2.6- B3- B4-A5- A6- A7- A8-