1: (5 10 12)

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

2: (4 10 6)

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

3: (8 14 11)

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

4: (1 12 6)

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