1: (0 2 5)

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

2: (1 6 3)

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

3: (2 12 19)

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

4: (8 20 18)

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