the text includes a preface that outlines the significance of the Mutsun language and its connection to the Mission of San Juan Bautista, providing historical context for the reader. It highlights the efforts of Father Felipe Arroyo de la Cuesta in compiling this grammatical work, referencing the unique features of the Mutsun language, such as its declension system, the absence of certain letters, and the grammatical structures in comparison to Spanish. This foundational section sets the stage for a comprehensive examination of the language's structure, including nouns, pronouns, verbs, and various grammatical rules, making it a valuable resource for linguists and those interested in Native American languages. (This is an automatically generated summary.)