1: (1 5 20)

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

2: (0 8 2)

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

3: (1 5 20)

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

4: (4 10 7)

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