1: (0 10 12)

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

2: (9 13 11)

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

3: (8 19 12)

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

4: (4 20 18)

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