1: (0 2 15)

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

2: (1 18 6)

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

3: (4 15 21)

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

4: (3 7 5)

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