ないと,なくちゃ => Must do A N3
Needs, Requirement
に[違「ちが」]いない => Without a doubt, A N2
Information, Report
か~ないかのうちに => Right after A, C N2
Time, Situation
がちです/がちになる => A tends to become/happen/occur N2
Potential, Possibility
うち/ないうち => While A is the case, B; While A is occuring, B, While A is not occuring, B N3
Conditional, While
めったにない => Rarely N3
Degree. Level, Amount
はもちろん/はもとより => Although A is given/obvious; B N3
List, Examples
いかんでは,いかんによっては => Considering A, depending on A N1
Based/focused/depending on
といったらない/といったらありはしない => Extremely A, Very A, A beyond description N1
Degree/ Level/Amount
っこない => A is definitely not possible N2
Potential, Possibility
[決「けっ」]して~ない => Won’t, isn’t N3
Will, Decision, Doing
ようがない => There is no way to do A N2
Potential, Possibility