1: (1 6 15)

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

2: (0 8 3)

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

3: (1 6 15)

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

4: (5 13 7)

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