1: (4 6 11)

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

2: (5 17 7)

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

3: (6 15 10)

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

4: (14 18 16)

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