1: (3 8 15)

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

2: (1 9 5)

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

3: (2 6 4)

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

4: (0 14 8)

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