1: (1 5 20)

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

2: (0 12 2)

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

3: (1 5 20)

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

4: (4 15 6)

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