1: (2 7 17)

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

2: (6 19 9)

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

3: (16 20 18)

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

4: (4 13 17)

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