x

S₃x

S₄x

S₅x

S₆x

P₃x

A₁x

B₃x

C₂x

H₁x

M₃x

M₄x

g

g

b

g

g

g

g

g

g

b

b

g

b

b

g

g

b

b

b

b

b

g

g

b