1: (6 9 16)

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

2: (5 10 8)

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

3: (3 11 9)

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

4: (1 7 4)

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