1: (0 4 8)

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

2: (2 18 5)

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

3: (4 14 7)

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

4: (1 20 9)

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