や、やいなや => As soon as A, B N1
Time, Situation
かねない => Afraid that N2
Potential, Possibility
ねばならない => Must A N2
Needs, Requirements
ね => Requests confirmation from the listener N5
Particles
やすい => A is easy to do N4
Verb Suffixes
やら~やら => A, B, ... (examples from a list) N2
Lists, Examples
[兼「か」]ねて => Also for the purpose of A N1
Miscellaneous
てやまない => To (always) think/feel/hope/etc. A N1
Will, Decision, Doing
やる => Give B to A N4
Give and take advice
てやる => Do for someone N4
Give and take advice
が[早「はや」]いか => As soon as A occurred, right after A N1
Time, Situation
と[思「おも」]いきや => Even though A (was thought/expected), different result B N1
Contrast/Surprise