1 A A A A A A A A A A A A A A A A A A A A 2 B

1 A A A A A A A A A A A A A A A A A A A A 2 B 3 C

1 A A A A A A A A A A A A A A A A A A A A 2 B 3 C

1 A A A A A A A A A A A A A A A A A A A A 2 B
2.1 a a a a a a a a a a a a a a a a a a a a 2.2 b
3 C

1 A A A A A A A A A A A A A A A A A A A A 2 B
2.1 a a a a a a a a a a a a a a a a a a a a 2.2 b
3 C