1: (5 7 12)

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

2: (1 7 15)

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

3: (4 20 6)

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

4: (0 18 2)

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