Like a postposition, placed behind the noun it applies to: 'ewily emak wenak. "He sat behind a rock" ('ewily = rock, wenak = sits)
Note that Cuevas' pronunciation of "e" may sometimes sound like English "e" in "men", whereas to most other speakers it would be a more neutral shwa sound, close to Kumeyaay "a" or English "uh" as in "another".