[合「あ」]う => To do A together/mutually N4
Secondary Verb
[間「あいだ」]/[間「あいだ」]に => During A, During A (before A is finished/over) N2
Time, Situation
を => Over , across, along... N5
Particles
をはじめ/をはじめとする => For example, A N2
Lists, Examples
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[踏「ふ」]まえて => Thinking of A N1
Based/focused/depending on
を[機「き」]に => Use A as an opportunity N1
Time, Situation
をかわきりに => Starting with A N1
Miscellaneous
を[込「こ」]めて => Put A into it N2
Will, Decision, “Doing”