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
せいで/せいか => Because of A, B N3
Reason, Result, Response
さえ/にさえ/でさえ => Even N3
Not only, Not even
くせして => Even though A N2
Contrast,Surprise
さて => So N2
Miscellaneous
~ます/~ません => Polite, present form N5
Verb suffixes
~ませんか => Let's…, Would you like to... N5
Verb suffixes
てみせる => To show (the action) A N1
Will, Decision, Doing
くせに => Even though A, unfortunate result B N3
Contrast
にしろ/にせよ/にもせよ => Regardless of if it's A or B, Even in the case of A N2
Based, Focused, Depending on