1: (0 5 15)

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

2: (9 15 19)

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

3: (2 20 18)

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

4: (1 6 3)

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