1: (6 11 15)

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

2: (5 14 7)

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

3: (6 11 15)

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

4: (4 12 8)

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