1: (0 2 7)

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

2: (4 7 21)

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

3: (3 15 5)

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

4: (6 19 11)

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