1: (5 9 13)

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

2: (1 9 8)

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

3: (4 14 6)

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

4: (3 11 7)

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