5

As brianpck says, after a vowel only -olus is possible (and -ulus is not). One other place where -olus can appear is after V (consonantal U) or QU, since a general habit in older Latin documents was to write O instead of U (V) after these consonant sounds. (It's not clear whether this O represented the sound /o/, or was just a different spelling of the sound ...


Only top voted, non community-wiki answers of a minimum length are eligible