1: (6 9 13)

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

2: (8 16 10)

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

3: (5 11 7)

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

4: (4 12 9)

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