1: (5 10 12)

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

2: (8 16 10)

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

3: (4 9 7)

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

4: (8 18 12)

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