The 3rd Conjugation
Imperfect is characterized by the 'bä'
Drop 'ere' from
Present Active Infinitive and add ë plus bä plus endings
e.g. trahö,
trahere, träxï, tractum
trah/ere plus 'ë'
plus 'bä' plus 's' = trahëbäs
The exceptions are 3rd singular and plural.
3rd Conjugation - Imperfect