1: (4 8 12)

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

2: (7 18 9)

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

3: (8 13 10)

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

4: (6 15 11)

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