つつある => In the middle of A; in the process of A N2
Time, Situation
[続「つづ」]ける => continues, to continue to N4
Secondary Verb
つつ/つつも => While A, B. Although A (is beng done), B N2
Information, Report
へ => Go to N, head to N , Often followed by verbs like 行く/いく, 来る/くる, 向かう/むかう… N5
Particles
ようになる/なくなる => Become… N3
Time, Situation
つ~つ => Doing A and B (repeatedly, one after another) N1
Information, Report
てくれる => Do for someone. N4
Give and take advice
てくる => To come, to continue N4
Secondary Verb
くする/にする => To make, to change into N5
Change, cause and effect
ねばならない => Must A N2
Needs, Requirements
て[下「くだ」]さる => Do for someone N4
Give and take advice
にくる => Come (here) in order to A N4
Secondary Verb