___
--- 由 as in
由 is in  Ref. 由 [because of]
理由 riyū reason | cause 理 [cause]  Ref. 由 [because of]
事由 jiyū reason | cause 事 [thing]  Ref. 由 [because of]
自由 jiyū freedom | liberty   Ref. 由 [because of]
由 is in  Ref. 届 [deliver]