1: (0 2 12)

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

2: (1 20 3)

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

3: (2 19 5)

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

4: (4 18 10)

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