1: (4 9 17)

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

2: (0 10 8)

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

3: (9 19 11)

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

4: (2 20 15)

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