I
u
11
= h2u
3
− 2u
2
+ d + 2u − 1, u
3
+ 2c + u + 1, b − u, a, u
4
− 2u
3
+ 3u
2
− 3u + 2i
I
u
12
= hd − 1, c − u, b, a − u, u
2
+ 1i
I
u
13
= hd − u, c, b − u, a + 1, u
2
+ 1i
I
u
14
= hd + 1, c − u, b − u, a − 1, u
2
+ 1i
I
u
15
= hda + u + 1, c − u, b − u, u
2
+ 1i
I
v
1
= ha, d + v, c + a − 1, b − v, v
2
+ 1i
* 15 irreducible components of dim
C
= 0, with total 60 representations.
* 1 irreducible components of dim
C
= 1
2
All coefficients of polynomials are rational numbers. But the coefficients are sometimes approximated
in decimal forms when there is not enough margin.
2