1: (1 5 11)

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

2: (4 12 6)

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

3: (1 5 11)

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

4: (0 7 3)

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