RSUEBZO
Make words with O
Never:
* Plural -S
* Third-person -S
Missing: sorb, rouser, obsessus, rebore, suer
BOBBER BOOB BOOR BOOZE BOOZER BORE BORER BOSS BOURSE BOZO BURO BURRO EROSE ERROR EURO OBESE OBOE OBSESS OOZE ORZO OUZO RESORB ROBBER ROBE ROSE ROUSE SOBBER SOBER SOBERER SORE SOUR SOURER SUBEROSE SUBEROUS SUBZERO ZERO