1: (6 8 12)

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

2: (4 10 7)

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

3: (9 16 11)

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

4: (1 12 5)

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