Say, a person posts a topic in a forum, asking for an appropriate English word to be used in a particular context. I reply with one that seemed fitting to me, and add:
"All I could recall beyond that was (here comes one additional word)."
Is that correct in terms of tense choice or should I rephrase it to
"All I can recall beyond that is ..."
"All I've been able to recall beyond that is ..."
I'm also curious whether the addition of "so far" would make sentence 1 outright erroneous:
"All I could recall beyond that so far was ..."
Sorry if the question is too simple. I catch myself making mistakes and find asking questions a good way to make myself pay attention.