1: (0 3 5)

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

2: (2 6 4)

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

3: (3 7 17)

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

4: (1 20 9)

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