1: (0 3 6)

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

2: (4 10 17)

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

3: (9 18 11)

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

4: (8 19 17)

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