なくてもいい => Don't have to A N4
Can, Should, Must
てもかまわない => No problem N4
Can, Should, Must
ても、~でも => Even if A N4
Conditional
に[基「もと」]づいて/に[基「もと」]づき/に[基「もと」]づく => Based on A N2
Based, Focused, Depending on
させて[頂「いただ」]きます/させてもらいます => Allow me to A N1
Miscellaneous
ないものでもない/ないでもない => A is not completely impossible N1
Need/Requirements
てもらう => Do for N4
Give and take advice
と[言「い」]っても => Although A is the case, B (as well) N3
List, Examples
と[言「い」]っても => Although A is the case, B (as well) N2
Lists, Examples
てもいい => It is alright to A; the subject may A; it's alright if A (condition) N4
Can, Should, Must
てからというもの => After A (happens), B changed (major change, everything changes) N1
Information, Report
もし~としても => Even if A... (chances of A are pretty low) N3
Not only, Not even