1: (1 4 15)

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

2: (0 8 2)

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

3: (1 6 18)

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

4: (5 10 7)

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