with the sentence-final particle bék, and the negative imperative with the preverbal juai/juei (in Vietnam and Cambodia respectively). Sociolinguistics Diglossia Brunelle observed two phenomena of language use among speakers of Eastern Cham: They are both diglossic and bilingual (in Cham and Vietnamese). Diglossia is the situation where two varieties of a language are used in a single language community, and oftentimes one is used on formal occasions (labelled H) and the other is more colloquial (labelled L). Dialectal differences Cham is divided into two primary dialects. Western Cham: It is spoken by the Chams in Cambodia as well as in the adjacent Vietnamese provinces of An Giang and Tây Ninh. Eastern Cham: It is spoken by the coastal Cham population in the Vietnamese provinces of Bình Thuận, Ninh Thuận, and Đồng Nai. The two regions where Cham is spoken are separated both geographically and culturally. The more numerous Western Cham are predominantly Muslims (although some in Cambodia now practice Theravāda Buddhism), while the Eastern Cham practice both Hinduism and Islam. Ethnologue states that the Eastern and Western dialects are no longer mutually intelligible. The table below gives some examples of words where the two dialects differed as of the 19th century. {| class="wikitable" |- ! ! Cambodia ! southern Vietnam |- ! colspan = "3" align="center" | vowels |- | child || anœk || anẽk |- | take || tuk || tôk |- | not || jvẽi || jvai |- ! colspan = "3" align="center" | sibilants |- | one || sa || tha |- | save from drowning || srong || throng |- | salt || sara || shara |- | equal || samu || hamu |- ! colspan = "3" align="center" | final consonants |- | heavy || trap || trak |- | in front || anap || anak |- ! colspan = "3" align="center" | lexical differences |- | market || pasa || darak |- | hate || amoḥ || limuk |} Lê et al. (2014:175) lists a few Cham subgroups. Chăm Poông: in Thạnh Hiếu village, Phan Hiệp commune, Bắc Bình District, Bình Thuận Province. The Chăm Poông practice burial instead of cremation as the surrounding Cham do. Chăm Hroi (population 4,000): in Phước Vân District (Bình Định Province), Đồng Xuân District (Phú Yên Province), and Tây Sơn District (Bình Định Province) Chàvà Ku, a mixed Malay-Khmer people in Châu Đốc Writing systems Cham script is