Glottal replacement also occurs in Indonesian, where syllable final is produced as a glottal stop. Phonologically, Egyptian contrasted labial, alveolar, palatal, velar, uvular, pharyngeal, and glottal consonants. The Quenya consonant system has five places of articulation&colon; labial, dental, palatal, velar, and glottal. This particularly concerns clusters that involve the approximants or the glottal fricative . A syllable must start with a consonant (including the glottal stop) followed by one vowel. Consonants accompanied by a glottal stop (ejectives) were marked by &colon; . They occur as the intervocalic allophone of glottal stop in many languages. All the consonants, with the exception of the pharyngeal and glottal, can be geminated. For the insertion of glottal stops before certain consonants, see Glottalization below. The glottal stop is phonemic in Samoan. Their proposal was based on a disputed theory of glottal consonants in PIE. Some additional details on glottal consonants are found in Carter. All dialects possess a contrast between plain and labialized glottal stops. This figure is helpful in identification of glottal and ventricular constriction. Clicks may be pronounced with a third place of articulation, glottal.