1: (5 8 12)

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

2: (3 8 6)

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

3: (4 13 11)

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

4: (7 14 9)

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