1: (7 12 15)

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

2: (10 17 13)

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

3: (7 12 15)

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

4: (4 11 9)

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