1: (1 6 12)

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

2: (4 13 11)

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

3: (3 18 12)

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

4: (0 17 2)

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