x

y

S2xy

K2xy

N2xy

F2xy

A2xy

V2xy

W2xy

C2xy

Z2xy

E2xy

g

g

b

g

b

b

b

b

b

b

b

g

g

b

g

b

b

b

b

b

b

b

b

b

b

g

g

b

b

g

g

g

b

g

b

b

b

b

g

b

g

b

b

b

b

b

b

g