The Sentence Diagram Generator visually represents the grammatical structure of the sentence: "Very frequently, the prepositions ana and ina occur with the bound form of a noun in a prepositional phrase."

1. Subject: "the prepositions ana and ina"
   • Modifiers: "Very frequently" (adverbial phrase)
2. Predicate: "occur"
3. Prepositional Phrase: "with the bound form of a noun"
   • Object of the Preposition: "the bound form of a noun"
     • Modifiers: "bound" (adjective)
     • Noun: "form"
     • Prepositional Phrase: "of a noun"
       • Object of the Preposition: "noun"

This structure illustrates the relationships between the components of the sentence, highlighting the main subject, predicate, and additional details provided by prepositional phrases and modifiers.