1: (6 10 16)

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

2: (4 11 9)

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

3: (1 7 5)

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

4: (3 12 10)

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