1: (0 3 7)

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

2: (2 8 4)

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

3: (1 19 7)

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

4: (6 20 18)

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