たち => Plural form N5
Amount
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
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
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
[最中「さいちゅう」] => In the middle of A N3
Time, Situation
か~ないかのうちに => Right after A, C N2
Time, Situation
[中心「ちゅうしん」]に => With A as the center N2
Miscellaneous
と、と、どちらが~ => Which is more C, A or B N4
Comparisons
はもちろん/はもとより => Although A is given/obvious; B N3
List, Examples
ちなみに => A. and/in addition/by the way, B (a little more information) N2
Information, Report