1: (0 1 3)

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

2: (1 15 18)

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

3: (14 19 17)

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

4: (6 20 18)

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