be worried about / be grieved over

correspond with *someone / communicate with *someone (via correspondence) / communication (via correspondence) / communicate with *someone

(of a path) be linked / get connected with / make (a path) reach / get (a path) connected with / (of a path) go to / be opened to / lead to / (of a path) run to / (of a path) get through

(of a path) go to / open to / (of a path) run / (of a path) be built out to / lead to / (of a path) get through

be versed in / be well informed about / know a lot about / be familiar with

know a lot about / be familiar with / be well versed in / be posted in / be well-read in / be well informed about / be acquainted with

be in secret touch with / communicate secretly with

communicate secretly with / be in secret touch with

commit adultery with / have an adulterous relationship with / have liaison with

commit incest