1: (0 4 7)

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

2: (3 21 5)

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

3: (7 11 18)

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

4: (6 14 8)

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