1: (0 2 12)

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

2: (1 20 3)

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

3: (2 19 5)

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

4: (4 18 11)

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