Balbutier belong to the 1st group. Balbutier is a common french verb.
Balbutier is conjugated the same way that verbs that end in : -ier
Balbutier is conjugated with auxiliary avoir.
Balbutier verb is
direct transitive, intransitive. Balbutier verb is a direct transitive verb, so passive voice can be used.
However, although the terminations are perfectly regular, stem can be irregular and have numerous variations.
Balbutier is conjugated the same way that verbs that end in : -ier.