1: (1 9 12)

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

2: (6 13 11)

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

3: (4 14 7)

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

4: (1 17 8)

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