1: (5 15 18)

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

2: (4 17 6)

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

3: (13 19 16)

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

4: (1 15 20)

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