いつかの ... => Previously N4
Time
~且つ(かつ) => and N1
Line up, list
いつしか => before one knows N2
Accept, agree
いつか => Since when (Don't know) N4
Time
いつか ... た => Formerly (At some point) N4
Time
いつか(は) => sometime; someday; one day N4
Future time
からつくる/でつくる => made from; made with N4
~とも~ともつかぬ/ともつかない      => whether A or B (shows doubt or uncertainty between the two things) N1
~いかんだ / いかんで、~ /  ~いかんによって、~ => It depends ... N1
Related, corresponding
~かつて => once; before; formerly; ever; former N1
Time
いつも => always; usually; habitually N5
~つい      => accidentally; unintentionally; by mistake N3
Regret