1: (1 5 9)

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

2: (0 6 4)

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

3: (1 5 9)

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

4: (3 10 7)

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