1: (1 4 12)

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

2: (0 10 2)

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

3: (9 13 11)

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

4: (1 16 3)

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