1: (2 6 16)

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

2: (1 9 3)

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

3: (2 6 16)

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

4: (0 7 4)

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