1: (0 1 5)

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

2: (5 16 20)

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

3: (14 21 18)

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

4: (4 17 6)

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