1: (3 7 11)

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

2: (2 8 5)

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

3: (7 14 9)

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

4: (10 16 12)

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