1: (0 4 5)

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

2: (4 9 12)

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

3: (7 14 11)

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

4: (2 10 8)

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