II. I
u
2
= h3.31 × 10
20
u
23
+ 5.28 × 10
20
u
22
+ · · · + 1.04 × 10
20
b − 5.11 ×
10
20
, −1.66 × 10
21
u
23
− 5.94 × 10
21
u
22
+ · · · + 1.04 × 10
20
a − 2.53 ×
10
21
, 3u
24
+ 9u
23
+ · · · + 2u − 1i
(i) Arc colorings
a
1
=
1
0
a
5
=
0
u
a
2
=
1
u
2
a
9
=
15.9317u
23
+ 56.9188u
22
+ ··· + 50.9349u + 24.2612
−3.17139u
23
− 5.06341u
22
+ ··· − 7.79170u + 4.89781
a
10
=
12.1667u
23
+ 46.7699u
22
+ ··· + 43.9151u + 26.1178
−5.35993u
23
− 11.5619u
22
+ ··· − 9.81087u + 5.27989
a
6
=
−84.1044u
23
− 268.257u
22
+ ··· − 263.109u − 112.887
−12.3774u
23
− 31.9429u
22
+ ··· − 27.4410u − 3.91123
a
4
=
−78.1968u
23
− 259.494u
22
+ ··· − 248.256u − 114.772
−2.80662u
23
− 9.38843u
22
+ ··· − 12.2811u − 7.81972
a
8
=
12.7603u
23
+ 51.8554u
22
+ ··· + 43.1432u + 29.1590
−3.17139u
23
− 5.06341u
22
+ ··· − 7.79170u + 4.89781
a
7
=
429.521u
23
+ 1390.96u
22
+ ··· + 1349.20u + 600.421
22.3874u
23
+ 79.4556u
22
+ ··· + 71.7367u + 44.7039
a
12
=
−16.8085u
23
− 58.6731u
22
+ ··· − 76.3822u − 33.7916
6.65068u
23
+ 14.5110u
22
+ ··· + 10.5808u − 5.87098
a
3
=
−77.3125u
23
− 263.827u
22
+ ··· − 267.815u − 134.829
5.87064u
23
+ 7.58330u
22
+ ··· + 1.87252u − 14.4510
a
11
=
−467.874u
23
− 1518.35u
22
+ ··· − 1480.70u − 676.607
−27.2142u
23
− 92.5923u
22
+ ··· − 98.1327u − 45.7951
(ii) Obstruction class = 1
(iii) Cusp Shapes =
15567420443266398355
848453330711578363
u
23
+
65978204663978426720
848453330711578363
u
22
+ ··· +
254947120382131285522
2545359992134735089
u +
74454949588876009760
848453330711578363
21