1: (2 7 15)

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

2: (6 20 8)

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

3: (1 15 5)

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

4: (0 18 3)

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