[中心「ちゅうしん」]に => With A as the center N2
Miscellaneous
[最中「さいちゅう」] => In the middle of A N3
Time, Situation
そうにない => N2
Potential, Possibility
ようになる/なくなる => Become… N3
Time, Situation
どんなに~うが => No matter what A, no matter how A N1
Miscellaneous
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
てしまう => Did something N4
Secondary Verb
はどうあれ => Whatever the A, regardless of the A N1
Based/focused/depending on
に[相違「そうい」]ない => No doubt N2
Information, Report
てしょうがない/てしかたがない => Very A; Really A; Extremely A N2
Degree, Level, Amount
~ましょう。 => Let's (together), Shall I/we…? N5
Verb suffixes
にいく => Go somewhere N4
Secondary Verb