Soucier belong to the 1st
group. Soucier is a very common french verb.
Soucier is conjugated the same way that verbs that end in : -ier
Soucier is conjugated with auxiliary avoir
Soucier verb is
French verb soucier can be conjugated in the reflexive form: Se soucier
verb is a direct transitive verb, so passive voice can be used.