Contraindre belong to the 3
rd group. Contraindre is a common french verb.
Contraindre is conjugated the same way that verbs that end in :
-ndre
Contraindre is conjugated with
auxiliary avoir.
Contraindre verb is
direct transitive.
French verb contraindre can be conjugated in the reflexive form:
Se contraindre
Contraindre verb is a direct transitive verb, so passive voice can be used.