1: (0 3 7)

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

2: (2 8 4)

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

3: (3 15 17)

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

4: (14 18 16)

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