1: (6 11 18)

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

2: (4 13 7)

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

3: (10 15 12)

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

4: (5 18 9)

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