1: (10 15 20)

(0 15 5 20 2)(1 6 3)(4 19 17)(7 11 9)(8 14 12)(10)(13 18 16)

2: (2 5 20)

(0 15 5)(1 6 3)(2)(4 19 17)(7 11 9)(8 14 12)(10)(13 18 16)(20)

3: (1 6 3)

(0 15 5)(1)(2)(3)(4 19 17)(6)(7 11 9)(8 14 12)(10)(13 18 16)(20)

4: (0 15 5)

(0)(1)(2)(3)(4 19 17)(5)(6)(7 11 9)(8 14 12)(10)(13 18 16)(15)(20)