1: (6 8 11)

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

2: (7 17 9)

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

3: (6 8 11)

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

4: (4 13 10)

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