This document discusses syllable structure in Modern Standard Arabic and colloquial Arabic. It defines a syllable as containing at least one vowel, and optionally beginning or ending with one or more consonants. It identifies different syllable types in MSA such as light (CV), heavy (CVV, CVC, CVVC), and super-heavy (CVCC). It notes that long syllables tend to occur in pre-final or final position in both MSA and colloquial Arabic. Examples of common syllable patterns are provided for each dialect. The document also provides notes on vowel phonology and changes between MSA and colloquial syllable structure.