1: (5 8 15)

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

2: (4 9 6)

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

3: (3 12 8)

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

4: (7 13 11)

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