II. I
u
2
= h−5.48 × 10
24
u
26
− 9.24 × 10
22
u
25
+ · · · + 2.62 × 10
24
b − 3.76 ×
10
22
, −2.18 × 10
24
u
26
+ 3.10 × 10
24
u
25
+ · · · + 2.62 × 10
24
a − 1.13 ×
10
25
, 3u
27
− u
26
+ · · · − 6u
2
+ 1i
(i) Arc colorings
a
2
=
1
0
a
6
=
0
u
a
3
=
1
u
2
a
12
=
0.830026u
26
− 1.18351u
25
+ ··· − 2.18146u + 4.32029
2.08819u
26
+ 0.0352291u
25
+ ··· − 0.969498u + 0.0143553
a
7
=
−9.13895u
26
+ 3.75782u
25
+ ··· + 19.1051u − 0.580350
−1.21146u
26
+ 1.36298u
25
+ ··· + 3.45375u − 0.913452
a
5
=
u
u
a
4
=
19.8999u
26
− 5.44200u
25
+ ··· − 42.0029u − 0.818310
2.13751u
26
− 0.640341u
25
+ ··· − 4.97331u + 0.983879
a
8
=
−53.2973u
26
+ 14.6786u
25
+ ··· + 116.922u + 3.66324
−4.77966u
26
+ 2.89122u
25
+ ··· + 13.8959u − 3.34107
a
11
=
−0.703685u
26
− 7.82470u
25
+ ··· − 4.38591u + 16.7491
1.55379u
26
− 2.01157u
25
+ ··· − 2.08747u + 1.79186
a
9
=
−17.4160u
26
+ 6.20552u
25
+ ··· + 38.6101u − 3.38199
−2.41028u
26
+ 1.11206u
25
+ ··· + 5.03666u − 0.825501
a
1
=
−19.9953u
26
+ 17.9764u
25
+ ··· + 47.8550u − 26.3512
−4.73532u
26
+ 3.06498u
25
+ ··· + 11.6086u − 4.04184
a
10
=
−18.0474u
26
+ 6.17298u
25
+ ··· + 39.3788u − 2.68988
−2.60784u
26
+ 1.19707u
25
+ ··· + 5.24713u − 0.744502
(ii) Obstruction class = 1
(iii) Cusp Shapes =
96546149137055527549848081
2622017778319800888275503
u
26
−
21368440923253031371319385
2622017778319800888275503
u
25
+
··· −
206442519224589606723744388
2622017778319800888275503
u −
13602696470375884795425211
2622017778319800888275503
15