1: (0 2 12)

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

2: (1 20 3)

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

3: (2 14 4)

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

4: (8 17 13)

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