1: (4 6 20)

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

2: (4 7 11)

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

3: (5 14 8)

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

4: (10 16 13)

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