1: (2 7 11)

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

2: (6 20 8)

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

3: (2 7 11)

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

4: (1 9 5)

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