1: (0 2 16)

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

2: (1 19 4)

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

3: (2 18 13)

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

4: (12 17 15)

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