1: (1 7 12)

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

2: (3 15 10)

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

3: (11 16 13)

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

4: (1 10 4)

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