1: (1 5 8)

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

2: (4 15 6)

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

3: (0 9 7)

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

4: (3 10 8)

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