The verbs plaire, déplaire, complaire has a circumflex accent on "i" in 3rd person singular of indicative present: il plaît, il déplaît. However, the regular "i" is allowed: il plait, il déplait. Their past participles are invariable: plait, déplait.
2 verbs follow this model. Below an extract:
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Based on the ending, you can identify features that different verbs have in common. Click on the verbs above to see their conjugation tables and explore their conjugation patterns.