1: (7 9 11)

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

2: (11 15 18)

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

3: (14 20 16)

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

4: (9 18 13)

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