1: (4 9 12)

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

2: (7 14 10)

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

3: (1 12 5)

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

4: (3 8 6)

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