て下さいませんか => Please do A (polite) N5
Asking and Telling
をくださいませんか => Please give me A (polite) N5
Asking and Telling
[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[頂「いただ」]きます/させてもらいます => Allow me to A N1
Miscellaneous
てさしあげる => Do for N4
Give and take advice
~ました/~ませんでした => Polite, past form of verb N5
Verb suffixes
てしまう => Did something N4
Secondary Verb
まだしも => A is acceptable, N2
Comparison, Exchange
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
しまつだ => Denotes negative results A N1
Reason, Result, Response
さえ/にさえ/でさえ => Even N3
Not only, Not even
~ましょう。 => Let's (together), Shall I/we…? N5
Verb suffixes