1. They were originally aspirated consonants used in Sanskrit and Kawi transliterations. 2. Aspirated consonants are not always followed by vowels or other voiced sounds.3. Shanghainese are slack voice; they contrast with tenuis and aspirated consonants . 4. However, this effect is effectively blocked by an intervening aspirated consonant . 5. Intervocalically the aspirated consonants become pre-aspirated unless followed by a closed vowel. 6. Aspirated consonants are sometimes used in the Brahmin dialect, but are not phonemic.7. An unmarked " h " is used to form digraphs denoting aspirated consonants . 8. If two aspirated consonants are brought together in one stem, the first loses its aspiration. 9. Aspirated consonants are preaspirated in medial and word-final contexts, devoicing preceding consonants and vowels.10. The aspirated consonants are sometimes classified as separate letters, although it takes two characters to represent them.