[謙譲語「けんじょうご」] => Humble form of A, humble form of する verbs N4
Honorifics
をはじめ/をはじめとする => For example, A N2
Lists, Examples
[尊敬語「そんけいご」] => Respectful form of A N4
Honorifics
ふりをする => To pretend to (be) A N3
Adjectival, Description
を[余儀「よぎ」]なくされる => Must do A N1
Will, Decision, Doing
ざるを[得「え」]ない => Only A is left to do/can be done N2
(Not)only, (Not) even
を => Over , across, along... N5
Particles
を[経「へ」]て => After A N1
Time, Situation
をもとに/をもとにして => A as a basis for B N2
Based, Focused, Depending on
ものを => Although A, (unfortunate result) B N1
Contrast/Surprise
をください => Please give me N N5
Asking and Telling
をかわきりに => Starting with A N1
Miscellaneous