Elsewhere, I'm seeing where 'desservir' is conjugated as follows:
je desservis
tu desservis
il/elle/on desservit
nous desservons
vous desservez
ils/elles desservent
Which doesn't match the lesson example. If I were to follow the lesson example 'desservir' would be conjugated as follows:
je desserstu dessers
il/elle/on dessert
nous desservons
vous desservez
ils/elles desservent
Which version is correct?
DM,
would be helpful to have the link to elsewhere - is it just one site ?
The list you found elsewhere is wrong - it looks like a mishmash of passé simple for the singular verb forms with present tense for the plural verb forms. Best to direct a comment to them - might just be a production error that needs to be fixed.
Below is the link to the official Académie Française site, another conjugation ‘bible’ Bescherelle, and a couple of other references.
Desservir follows the pattern noted in the lesson here for ‘ servir ‘.
See last reference for a summary of irregular -ir verbs and their conjugations.
https://www.dictionnaire-academie.fr/conjuguer/A9D2004
https://conjugaison.bescherelle.com/verbes/desservir
https://www.wordreference.com/conj/frverbs.aspx?v=desservir
https://www.larousse.fr/conjugaison/francais/desservir/3177
https://www.lawlessfrench.com/grammar/irregular-ir-verbs/
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