1: (3 7 16)

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

2: (1 9 5)

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

3: (0 4 2)

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

4: (3 8 18)

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