1: (1 5 15)

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

2: (0 7 2)

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

3: (4 8 6)

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

4: (5 20 9)

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