1: (5 8 12)

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

2: (4 9 7)

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

3: (8 17 10)

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

4: (11 20 13)

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