The subject and object markers might appear as suffixes or prefixes, according to the verb class, the person and number, the tense and aspect of the verb, etc.; they also interact with each other phonologically. The polypersonal verbal system of Georgian allows the verb compound to convey the meanings of subject, direct object, indirect object, genitive, locative and causative meanings. As examples of the extremely complicated Georgian verb morphology, these are some simple polypersonal verbs (hyphens indicate morpheme boundaries):