... はずみ.... => So N2
Result
~Vず して => without doing ~ N1
Evaluate
必ずしも~とは限らない => Not necessarily; not always N3
…ば…はずだ => If ... then perhaps ... N3
Speculation
まずは => Temporary, first of all N5
Consider it
はずだ/はずがない => it must be; it should be (expectation)/cannot be (impossible) N3
…はずではなかった => cannot be (impossible) N3
Surprised
いずれにしろ => anyhow; anyway; either ... N2
Confirm
... はず => it must be; it should be (expectation) N3
Cause, reason
なしに(は)/なしで(は) => without; without doing ~ N1
いずれにしても => anyhow; anyway; either ... N2
Description
... たはず => it must be; it should be (expectation) N4
Speculation