1: (7 11 15)

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

2: (6 13 8)

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

3: (5 11 9)

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

4: (10 17 12)

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