1: (4 7 15)

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

2: (2 8 6)

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

3: (3 17 5)

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

4: (7 19 9)

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