The only obstruent without a counterpart is the voiceless velar fricative . The vowel is usually followed by an obstruent consonant. Greenlandic and Inuktitut either orthographize or transliterate their voiced uvular obstruent as . Such illicit clusters include those with sibilant sounds followed by obstruent sounds. Obstruents are devoiced in two environments&colon; in syllable-final position and following a voiceless obstruent. In southwestern Romance, clusters of a voiceless obstruent with were palatalized once or twice. In casual speech, may also be elided after an obstruent. Ultimate syllables closed by a coronal obstruent are not stressed. Similarly, the moraic obstruent corresponds to a reduced stop syllable. There are no specific restrictions on the types of obstruent sequences that can occur. Therefore, no "rendaku" can occur if the second element contains a voiced obstruent. The glide is not assimilated, but hardens to an obstruent after and to after . "/Q/ becomes a phonetic copy of a following obstruent".