1: (1 5 12)

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

2: (0 10 3)

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

3: (9 13 11)

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

4: (2 14 12)

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