For cover 2 a deep post or streak from a slot or tight end will get the job done.
For cover 3 running a curl flat combo works well, FL screen, a route combination of 3 guys on one side: One going deep on a streak to pull off the DB, one going to the flats to pull down the LB in the flat zone, and one doing a corner route that'll be wide open), 10 yard outs and ins, and usually 2 inside receivers running streaks will have one of them getting by (If they're not in dollar...I have a hard time doing this against dollar...)