I count 5 or 6. Dareus, Hughes, Gilmore, Darby, Graham, Lawson. Aaron Williams a potential seventh.
If we were in a base 4-3 rather than Rex' antiquated two-gap run stopping scheme (which the rest of the league is moving away from in favor of a one-gap pass rush), then Kyle Williams would be added to the list (8) and re-signing Bradham would be logical (9).