Prayers are unimembres when it is not possible to separate subject and predicate bimembres , when they have two terms. On the subject, the core is a noun and the predicate, a verb. If the subject has more than one core, it is a compound subject, if you have one, the subject is simple. If the predicate has more of a verbal nucleus is compound verbal predicate and, if you have only one, it’s simple verbal predicate.