1: (1 7 11)

(0 20 2)(1 10 7 9 3 15 4)(5 14 12 8 6)(11)(13 18 16)(17 21 19)

2: (6 12 8)

(0 20 2)(1 10 7 9 3 15 4)(5 14 12)(6)(8)(11)(13 18 16)(17 21 19)

3: (3 7 9)

(0 20 2)(1 10 7 15 4)(3)(5 14 12)(6)(8)(9)(11)(13 18 16)(17 21 19)

4: (7 15 10)

(0 20 2)(1 10 4)(3)(5 14 12)(6)(7)(8)(9)(11)(13 18 16)(15)(17 21 19)