それはそうと => By the way N2
Miscellaneous
そうだ => Seem, like… N4
Situations and Experiences
そうにない => N2
Potential, Possibility
や、やいなや => As soon as A, B N1
Time, Situation
てやまない => To (always) think/feel/hope/etc. A N1
Will, Decision, Doing
やら~やら => A, B, ... (examples from a list) N2
Lists, Examples
に[沿「そ」]って/に[沿「そ」]い/に[沿「そ」]う/に[沿「そ」]った => Along with A; In line with A N2
Based, Focused, Depending on
てしまう => Did something N4
Secondary Verb
うと~まいと,うが~まいが => Whether or not A (is/occurs) N1
Based/focused/depending on
に[相違「そうい」]ない => No doubt N2
Information, Report
てやる => Do for someone N4
Give and take advice
やる => Give B to A N4
Give and take advice