1: (1 4 15)

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

2: (0 7 2)

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

3: (4 20 13)

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

4: (3 14 12)

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