1: (7 10 15)

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

2: (4 12 9)

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

3: (7 10 15)

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

4: (5 16 14)

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