1: (0 2 8)

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

2: (1 9 7)

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

3: (4 8 21)

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

4: (3 10 5)

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