1: (6 10 13)

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

2: (7 14 12)

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

3: (4 10 8)

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

4: (9 16 11)

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