1: (3 6 16)

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

2: (1 9 4)

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

3: (3 6 16)

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

4: (5 11 7)

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