1: (0 3 10)

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

2: (1 19 6)

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

3: (8 20 18)

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

4: (5 10 7)

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