1: (5 9 18)

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

2: (1 15 7)

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

3: (4 18 6)

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

4: (0 12 2)

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