1: (4 8 15)

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

2: (2 11 5)

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

3: (3 15 12)

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

4: (1 9 7)

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