... おぼえはない => don't remember... N3
Position, perspective
~のぼる  => To increase N2
Reach level
に[加「くわ」]えて/に[加「くわ」]え => In addition to A (not only A), B as well. N2
Lists, Examples
~といえなくもない => It can be said that ~ N1
Concession
さえ/にさえ/でさえ => Even N3
Not only, Not even
~にたえる (耐える)    => bear doing ~ N1
さえ/でさえ => even; so much as; not even N3
とみえて/とみえる => It seems that ~ N1
させてください/させてもらえますか/させてもらえませんか => please let me do N3
あえて => dare to N2
Suggestion
の[末「すえ」]/た[末「すえ」] => conclusion N2
Reason, Result, Response
みえる => it seems that ~ N4