1: (0 1 4)

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

2: (4 8 20)

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

3: (7 21 9)

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

4: (1 20 5)

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