1: (6 12 18)

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

2: (5 14 7)

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

3: (11 17 13)

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

4: (4 8 12)

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