Can you please tell me if the following statements are possible?

Thank you very much for your help!

1) The action of the piston of the steam engine likens/is similar to/resembles/is like/ the head of an elephant in melancholy medness.
2)The town is described through (and not by?) three similes
3) The Victorian code of values was established/promoted during the reign of queen Victoria.
4) He wanted to show how/that (?) Coketown suffered from tedium
5)One of the effect mostly chosen by Poe was that of fear. (Can you say: tone of the most chosen effects was that of fear?)
6) Grendel represents for (is for necessary?) pure evil.

2 answers

1 - I don't know.

2 - either "through" or "by" will work.

3 - established

4 - that

5 - One of the effects created most by Poe was fear.
6 is fine -- delete the stuff in parentheses.