からつくる/でつくる => made from; made with N4
に気がつく => to notice; to realize N4
いつかの ... => Previously N4
Time
~且つ(かつ) => and N1
Line up, list
いつも => always; usually; habitually N5
~つい      => accidentally; unintentionally; by mistake N3
Regret
つつ => while; even though; despite ~ N2
いつか => Since when (Don't know) N4
Time
いつしか => before one knows N2
Accept, agree
いつか(は) => sometime; someday; one day N4
Future time
いつ => when; at what time; how soon N5
じつをいうと => Frankly speaking N2
Story topic