1: (4 8 12)

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

2: (3 11 5)

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

3: (10 12 14)

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

4: (1 9 7)

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