てやってもらえないか => Could you...help me, please? N3
Suggestion
てやってもらえるか => Could you please... help me? N4
Suggestion
やっと => Eventually... N4
どうやって => how N5
~やむをえず  => unavoidable, no other way to do something N2
Necessity, obligation
や、やいなや => As soon as A, B N1
Time, Situation
かえって => on the contrary N2
... やっと => at last; finally (Realizing what is expected) N3
Completed
といえば/というと/といったら => N3
Considering, Concerning
いまや => now, these days N3
Compare
や => ... or... N5
Line up, list
や否や => as soon as; the moment ~ N1