1: (1 5 12)

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

2: (6 12 16)

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

3: (0 8 2)

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

4: (4 10 7)

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