In her description of the phonology and grammar of Nheengatu, Cruz (2011) writes that there are two strategies in Nheengatu that express valency change, which involves the transformation of verbs. As Cruz (2011) explains in a previous chapter, transitive verbs are defined syntactically by their ability to select two arguments, while intransitives allow the selection of only one argument. This division is marked morphologically distinctly in Nheengatu. Intransitive verbs need to be morphologically transformed so they can select two arguments, and vice versa. There are two morphological operations that allow to change valency: