1: (0 5 7)

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

2: (4 9 6)

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

3: (1 16 21)

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

4: (8 19 11)

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