1: (0 1 3)

(0)(1 20 3 15 4)(2 21 19 17 6)(5 14 12 9 7)(8 11 10)(13 18 16)

2: (3 15 20)

(0)(1 20 4)(2 21 19 17 6)(3)(5 14 12 9 7)(8 11 10)(13 18 16)(15)

3: (2 17 6)

(0)(1 20 4)(2)(3)(5 14 12 9 7)(6)(8 11 10)(13 18 16)(15)(17 21 19)

4: (13 18 16)

(0)(1 20 4)(2)(3)(5 14 12 9 7)(6)(8 11 10)(13)(15)(16)(17 21 19)(18)