1: (0 3 4)

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

2: (4 7 9)

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

3: (6 12 8)

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

4: (3 9 5)

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