1: (2 8 10)

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

2: (6 13 8)

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

3: (9 17 12)

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

4: (1 7 5)

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