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Part I. Orthography and Orthoepy: Part II. Etymology or the Parts of Speech: 1. The verb A. General view B. The strong verb C. The weak verb 2. The noun A. The nouns substantive and adjective B. The numerals C. The nomina demonstrativa and conjuctiva Part III. The Particles: A. The prepositions B. The adverbs C. The conjunctions D. The interjections.
Hanna et al. (Wed,) studied this question.