1: (1 7 9)

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

2: (4 11 8)

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

3: (1 13 10)

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

4: (3 12 9)

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