| No such requirement holds if the first of the coda consonants is not an obstruent. |
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| Neither Mandarin Chinese nor Tibetan distinguishes phonologically between voiced and voiceless obstruent initials, unlike Dzongkha and, for example, English. |
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| If either of the two was voiceless, the whole cluster was devoiced, and the first obstruent also lost its labialisation, if it was present. |
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| The pattern of allophony is not completely clear, but generally is similar to the patterns of voiced obstruent allophones in languages such as Spanish. |
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| Obstruent laterals, which are mainly found in indigenous languages of North America, are sometimes thought of as liquids but do not have their high sonority. |
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