1: (1 10 15)

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

2: (9 16 12)

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

3: (0 15 8)

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

4: (11 16 13)

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