B state 1 B state 2.1 B state 3 B1 state 4.1 B1 state 4.2 B2 state 4.2 B2 state 4.1 B2 state 4.3 A state 2.1 A state 4.1 A state 4.2 A state 4.3 A state 4.4 A state 4.5 A state 4.6
