1: (0 2 4)

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

2: (1 9 3)

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

3: (4 16 18)

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

4: (15 19 17)

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