introduction to formal languages(peter linz)..7(g) and 7(e)

Question

in 7e what is the ans and in 7g if specific condition that is not equal to 6 is to be constructed then how can we consider middle situation?
7e-- L= {w :(na(w) – nb(w)) mod 3 > 0}.
7g--L= {w: |w| mod 3 = 0, |w| ≠6}.

Answer 1

for 1st one

and for second one

ie,we want to accept the string whose length 3,9,12,15,18,21,24,27,,,,,,,,,,,,,,,,,,,,