1: (5 9 13)

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

2: (4 10 7)

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

3: (8 14 12)

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

4: (6 15 13)

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