This well-known grammar trick to sound more formal with "were" "had" and "should" in conditional sentences.
Is it possible to use it with "could" (and even "might")?
"If I could do it, it would be..."
"Could I do it, it would be..."
Or does another construction have to be used? For instance :
"If I were able to do it, it would be..."
"Were I able to do it, it would be..."
Using "be able to" instead of "can/could" seems strange in this context to me. But I may be wrong.
Thank you in advance