1: (3 6 12)

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

2: (1 7 5)

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

3: (6 13 8)

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

4: (4 14 11)

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