1: (3 9 16)

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

2: (1 15 4)

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

3: (0 10 8)

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

4: (2 16 13)

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