1: (1 7 18)

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

2: (0 10 2)

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

3: (1 7 18)

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

4: (6 12 9)

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