[使「し」][役「えき」][受「う」]け[身「み」] => Imperative N4
Causative, Passive, Volitional
を[契機「けいき」] => As a good opportunity A, (do) B N2
Information, Report
に[先駆「さきが」]けて => The earliest, very first in A; Ahead of A, in advance of A N1
Time, Situation
をきっかけに => With A as a good opportunity/chance to B, Using A as a time to (start) B N2
Information, Report
きり => Only A N3
Degree. Level, Amount
[極「きわ」]み/[極「きわ」]まりない => Extremely A N1
Degree/ Level/Amount
ぬきにして/~ぬきで => Exclude A; Stop/end A; Without A N2
Miscellaneous
かけの/かけだ => B in the middle of A; half-A B N3
Time, Situation
に[先立「さきだ」]って/に[先立「さきだ」]ち/に[先立「さきだ」]つ => Before A occurs/takes place N2
Time, Situation
[時「とき」] => At the time A N5
Time
[禁止「きんし」] => Don't do N4
Can, Should, Must
だけど => A, however/but B N3
Contrast