て下さいませんか => Please do A (polite) N5
Asking and Telling
て[下「くだ」]さる => Do for someone N4
Give and take advice
なさい => Do A (command) N4
Can, Should, Must
[下「くだ」]さる => Give B to A (A is you, your friends, your family, etc.) N4
Give and take advice
~ないでください => Please don't do~ N5
Asking and Telling
[以下「いか」] => Less than A, under/below A (amount) N1
Degree/ Level/Amount
させて[頂「いただ」]きます/させてもらいます => Allow me to A N1
Miscellaneous
ねばならない => Must A N2
Needs, Requirements
ずにはいられない/ないではいられない => Can't help but A; A is unavoidable N2
Will, Decision, “Doing”
にほかならない => Only A N2
Reason, Result, Response
てならない => Very A; Extremely A N2
Degree, Level, Amount
[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