1: (0 2 12)

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

2: (4 12 21)

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

3: (3 15 5)

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

4: (2 20 12)

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