The consonants and their subscript forms are listed in the following table. Usual phonetic values are given using the International Phonetic Alphabet (IPA); variations are described below the table. The sound system is described in detail at Khmer phonology. The spoken name of each consonant letter is its value together with its inherent vowel. Transliterations are given using the transcription system of the "Geographic Department of the Cambodian Ministry of Land Management and Urban Planning" used by the Cambodian government and the UNGEGN system; for other systems see Romanization of Khmer.