1: (4 9 12)

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

2: (5 13 11)

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

3: (7 20 9)

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

4: (8 15 10)

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