1: (6 8 15)

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

2: (2 15 20)

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

3: (0 17 4)

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

4: (1 5 3)

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