Imperfect Verbs with Spelling Changes
Only two categories of verbs with spelling changes need a closer look in the imperfect:
For verbs ending in ‐cer, change c to ç before the a to keep the soft c (s) sound. This change occurs only inside the shoe.
For verbs ending in ‐ger, insert a silent e between g and a to keep the soft g (zh) sound. This change occurs only inside the shoe.