... 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
てもらえないか => could you please ~ N3
Request
あえて~ない => Not trying to find a way N2
Emphasize
といえば~かもしれない => Speaking of..., it might be... N3
Speculation
に堪えない => not worth doing; can't do; cannot bear doing ~ N1
~をきんじえない(~を禁じ得ない) => can't help but; can't refrain from ~ N1
もらえまいか => Help... N2
Benefit
いかに … とはいえ => What ever... N3
Things do not match the prediction
にたえる/にたえない => Can't do A, can't stand/tolerate A, Can do A, N1
Potential, Possibility
てやってもらえないか => Could you...help me, please? N3
Suggestion
…とばかりはいえない => speaking of; when you talk of; when you say ~ N2
Ban