1: (4 15 18)

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

2: (3 17 5)

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

3: (13 20 16)

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

4: (1 15 19)

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