1: (0 1 15)

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

2: (3 15 21)

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

3: (2 18 13)

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

4: (1 20 15)

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