1: (0 2 6)

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

2: (1 18 3)

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

3: (2 11 4)

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

4: (5 14 7)

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