1: (4 8 13)

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

2: (7 15 9)

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

3: (3 13 5)

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

4: (12 17 14)

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