1: (6 8 11)

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

2: (11 13 16)

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

3: (2 9 7)

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

4: (8 16 10)

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