1: (0 3 15)

(0)(1 6 4)(2 21 19)(3 16 15 18 14 12 10 7 5)(8 11 9)(13 20 17)

2: (5 15 18)

(0)(1 6 4)(2 21 19)(3 16 15)(5 14 12 10 7)(8 11 9)(13 20 17)(18)

3: (13 20 17)

(0)(1 6 4)(2 21 19)(3 16 15)(5 14 12 10 7)(8 11 9)(13)(17)(18)(20)

4: (1 6 4)

(0)(1)(2 21 19)(3 16 15)(4)(5 14 12 10 7)(6)(8 11 9)(13)(17)(18)(20)