1: (1 7 10)

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

2: (6 17 8)

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

3: (7 11 9)

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

4: (4 12 10)

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