χ 12

3

C

−C

−B

0

0

B ¯

D-

B

B ¯

D

0

0

0

0

0

0

χ 13

3

−C

C

B ¯

0

0

-B

D

B ¯

B

D ¯

0

0

0

0

0

0

χ 14

3

−B

B ¯

B

0

0

B ¯

D

−C

C

D ¯

0

0

0

0

0

0

χ 15

3

B ¯

−B

B ¯

0

0

B

D ¯

C

−C

D

0

0

0

0

0

0

χ 16

3

0

0

0

D

D ¯

0

3

0

0

3

0

0

0

0

0

0

χ 17

3

0

0

0

D ¯

D

0

3

0

0

3

0

0

0

0

0

0