1: (5 10 15)

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

2: (2 11 9)

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

3: (5 10 15)

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

4: (1 7 4)

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