にひきかえ => In contrast to A N1
Comparison/ Exchange
[必要「ひつよう」]はない => It is not necessary for A to be done N2
Needs, Requirements
たとたん => As soon as A (occured), B N3
Time, Situation
~たり~たりする => Do things like V1,V2 N5
Verb suffixes
たち => Plural form N5
Amount
かたがた => Using A as an opportunity/chance/way to B N1
Information, Report
ため(に) => For, because… N4
Cause and Effect
たもの => Used to N3
Sentence Endings
かた => How to A N4
Verb Suffixes
がた => Plural form(polite) N5
Amount
~たい。 => Want to V N5
Verb suffixes
たびに => Every time N3
Time, Situation