1: (0 2 5)

(0)(1 6 3)(2 16 13 11 5 21 19)(4 9 7)(8 12 10)(14 20 18 17 15)

2: (1 6 3)

(0)(1)(2 16 13 11 5 21 19)(3)(4 9 7)(6)(8 12 10)(14 20 18 17 15)

3: (2 16 19)

(0)(1)(2)(3)(4 9 7)(5 21 19 13 11)(6)(8 12 10)(14 20 18 17 15)(16)

4: (14 20 18)

(0)(1)(2)(3)(4 9 7)(5 21 19 13 11)(6)(8 12 10)(14 17 15)(16)(18)(20)