1: (4 9 12)

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

2: (6 13 11)

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

3: (5 10 7)

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

4: (4 16 8)

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