1: (4 10 15)

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

2: (2 11 15)

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

3: (8 16 14)

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

4: (6 12 9)

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