1: (0 3 11)

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

2: (2 21 4)

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

3: (3 13 17)

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

4: (8 14 12)

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