1: (1 6 12)

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

2: (4 13 11)

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

3: (2 7 5)

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

4: (10 14 12)

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