1: (1 5 12)

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

2: (0 10 2)

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

3: (1 5 12)

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

4: (4 11 7)

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