Form IX doubled verbs probably don't exist, and would be strong if they did exist.

Most irregular verbs exist as remnants of historical conjugation systems.

Due to the high precipitation in the Ore Mountains, many different verbs for different kinds of rain or drizzle exist.

The verb "Optimistiquer" does not exist in French.

Modal verbs like "want to", "wish to" etc. do not even exist:

The pithier nouns, verbs and adjectives do exist, mostly, with much of the usual impact.

These verbs existed as verbal roots, which could be modified into conjugations, nouns etc.

Many verbs existed which are now out of use.

It is an obligatory prefix such that verbs do not exist without the classifier.