つつある => to be doing; to be in the process of doing ~ N2
いつしか => before one knows N2
Accept, agree
つつある => In the middle of A; in the process of A N2
Time, Situation
つきましては => about; concerning; regarding N2
Cause, reason
ふしがある => Seem N2
Speculation
あかつきには => After A then B N1
Time, Situation
しまつだ => Denotes negative results A N1
Reason, Result, Response
あるいは~かもしれない => Or maybe... perhaps N4
Line up, list
ひとつには…ためである => Partly because of ... N3
Cause, reason
~且つ(かつ) => and N1
Line up, list
~てもさしつかえない => can ~; it’s okay if ~ (indicates permission or compromise) N1
Concession
つつ => while; even though; despite ~ N2