いかに … とはいえ => What ever... N3
Things do not match the prediction
もらえまいか => Help... N2
Benefit
... おぼえはない => don't remember... N3
Position, perspective
~といえなくもない => It can be said that ~ N1
Concession
といえば/というと/といったら => N3
Considering, Concerning
といえば…ぐらいのことだ => speaking of... just... N2
Respectful, humble
てもらえないか => could you please ~ N3
Request
~といえども => even if; even though; despite ~ N1
といえば~かもしれない => Speaking of..., it might be... N3
Speculation
あえて~ない => Not trying to find a way N2
Emphasize
~とはいえ      => though; although; be that as it may; nonetheless N1
というと/といえば/といったら => speaking of; when you talk of; when you say ~ N3