Point Group C
i
Quaternary direct products
A
g
⊙A
g
⊙
⊙
A
g
A
u
A
g
A
g
A
u
A
u
A
g
A
g
⊙A
u
⊙
⊙
A
u
A
u
A
u
A
u
⊙A
u
⊙
⊙
A
u
A
u
A
g