1: (4 5 7)

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

2: (7 11 13)

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

3: (9 14 12)

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

4: (5 13 8)

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