a requirement that a non-third person clitic is located higher on a tree than the third person clitic. In fact, clitic climbing is a common feature in Romance languages with designation of clitics as unbound morphemes where the clitic "climbs" to adjoin the verb in a higher position. This widely discussed theory has involved raising of the clitic as an unaccusative because of the lack of external argument in the grammar structure. The object clitic begins in the subject position of the verb, moving up to attach to the verb via adjunction on the left. Another theory is the "base-generation" which considers clitics to be affixes. However, both approaches fail when there is clitic doubling. Recent approaches As recently as 2021, Cuervo has suggested that, for clitic doubling, the solution is considering the dative clitic to be the head of an Applicative Phrase with care taken in identifying whether the form is proclitic or enclitic. Cuervo addresses the difference by positing the following: if the process is proclitic, there is climbing; if the process is enclitic, there is no climbing. Thus, the determining factor for syntactic presentation is the type of verbal phrase. Bradley illustrates some inflexible constructions, mainly when two third-person pronouns are within the same sentence and the indirect object must be expressed via : already CL(Nom.) CL(Acc.) sent-presperf "I have already sent it" In such cases, one solution is to use the particle followed by an infinitive verb when the clitic precedes an auxiliary verb, as in the example provided below: CL(Nom.) go-1.pres. to go to bed "We are going to bed" The clitic is not attached to the infinitive verb; instead, it is in subject position. Grammatically, attachment to the verb occurs with a non-finite or a main conjugated verb. The clitic adjoins the verb and undergoes head movement to check its features. Additional structures for direct and indirect objects have been suggested. Other views include the use of AgrS and AgrO for Spanish when clitics are involved. Daussá states that can block features as it travels attached to the appropriate verb form from the feature geometry which alters the nodes. Daussá’s realization of syntactic structure presents a solution for the paradigmatic issue of using AgrO and AgrS. This model includes a Determiner Phrase that is nominative with verbal agreement in both person and number. Romain has also offered a thorough examination of the various theories,