1: (0 5 16)

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

2: (7 16 21)

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

3: (6 18 14)

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

4: (12 17 15)

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