Verbs ending in -écer have an alteration (é -> è) in some forms (before a silent syllable except for the future and conditional forms) : rapiécer / il rapièce but il rapiécera, il rapiécerait. Like the verbs similar to commencer, the verbs that follow this model have an alteration c -> ç before the vowels "a" and o : il rapiéçait, nous rapiéçons.
To see other models, refer to Model Table
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.