1: (1 15 18)

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

2: (4 19 17)

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

3: (3 15 5)

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

4: (0 14 2)

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