I. I
u
1
= h7073u
11
+ 66159u
10
+ · · · + 129872b + 81956, −1.14 × 10
5
u
11
−
1.03 × 10
6
u
10
+ · · · + 2.60 × 10
5
a − 4.52 × 10
6
, u
12
+ 9u
11
+ · · · + 45u − 1i
(i) Arc colorings
a
3
=
1
0
a
5
=
0
u
a
2
=
1
−u
2
a
4
=
u
−u
3
+ u
a
1
=
−u
2
+ 1
u
4
− 2u
2
a
10
=
0.439860u
11
+ 3.97302u
10
+ ··· − 47.5490u + 17.4165
−0.0544613u
11
− 0.509417u
10
+ ··· + 6.62604u − 0.631052
a
9
=
0.439860u
11
+ 3.97302u
10
+ ··· − 47.5490u + 17.4165
−0.0450405u
11
− 0.419729u
10
+ ··· + 6.42332u − 0.616773
a
6
=
0.133728u
11
+ 1.20365u
10
+ ··· − 13.6953u + 6.55144
0.0197733u
11
+ 0.165055u
10
+ ··· − 1.07934u − 0.126956
a
7
=
0.113955u
11
+ 1.03859u
10
+ ··· − 12.6159u + 6.67839
0.0197733u
11
+ 0.165055u
10
+ ··· − 1.07934u − 0.126956
a
11
=
0.315345u
11
+ 2.83075u
10
+ ··· − 32.5667u + 13.8030
−0.0286436u
11
− 0.268888u
10
+ ··· + 3.78724u − 0.484901
a
12
=
−0.113955u
11
− 1.03859u
10
+ ··· + 12.6159u − 6.67839
−0.0649601u
11
− 0.595448u
10
+ ··· + 7.01396u + 0.0444168
a
8
=
0.315345u
11
+ 2.83075u
10
+ ··· − 32.5667u + 13.8030
0.0488288u
11
+ 0.442590u
10
+ ··· − 6.15990u − 0.207200
(ii) Obstruction class = −1
(iii) Cusp Shapes = −
1683
8117
u
11
−
255349
129872
u
10
+ ··· +
3115965
129872
u +
1650111
129872
2