でも[差「さ」]し[支「つか」]えない => It's OK if A, it doesn't matter if A N1
Need/Requirements
さえ/にさえ/でさえ => Even N3
Not only, Not even
さえ/でさえ => even; so much as; not even N3
さえ...たら => Just...is enough N3
Conditions (sufficient conditions)
~さえ…ば => if only; as long as ~ N3
Conditions (sufficient conditions)
ただでさえ => ordinary; usual... also... N2
Description
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
~てもさしつかえない => can ~; it’s okay if ~ (indicates permission or compromise) N1
Concession
[際「さい」]して/に([際「さい」]し)/に[際「さい」]しての => At the time of A (which starts now).. N2
Time, Situation
(さ)せてほしい => Please let me do N3
Allow
てさしあげる => Do for N4
Give and take advice
てさしあげる => to do something for somebody N4
Respectful, humble