1: (2 10 20)

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

2: (0 19 8)

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

3: (2 10 20)

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

4: (1 18 4)

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