G B R S T P
G G G * B G B *
(a) G B
R S T P
G B G * B G B G
(b1) G B
R S T P
G B G * B G B B (b2)
G B R S T P
G B G * G G B G
(c)
SG
SH PD
b a d
G B R S T P
G * G * B G B *
G B R S T P
G B G * G G G B (e)
R S T P
G B G * B G G G (d1) (d2)
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