Stress was phonemic. In Quileute, the stress became fixed to the penultimate syllable, though subsequent changes made it somewhat unpredictable. Open syllables developed long vowels. Morphology There are more than 20 known common inflectional suffixed and about 200 derivational suffixes. No common prefixes are known. In some cases, infixes are used in both languages. Lexicon Below is a table listing numerals from 1 to 10 in Chemakum and Quileute. Only 1 through 4 and 6 are cognate, the rest being independently innovated in the two languages. References Bibliography Andrade, Manuel J. (1933). Quileute. New York: Columbia University Press. (Extract from Handbook of American Indian Languages (Vol. 3, pp. 151–292); Andrade's doctoral dissertation). Andrade, Manuel J. (1953). Notes on the relations between Chemakum and Quileute. International Journal of American Linguistics, 19, 212–215. Andrade, Manuel J.; & Frachtenberg, Leo J. (1931). Quileute texts. Columbia University contributions to anthropology (Vol. 12). New York: Columbia University Press. Boas, Franz. (1892). Notes on the Chemakum language. American Anthropologist, 5, 37–44. Campbell, Lyle. (1997). American Indian languages: The historical linguistics of Native America. New York: Oxford University Press. . Mithun, Marianne. (1999). The languages of Native North America. Cambridge: Cambridge University Press. (hbk); . Powell, James V. (1974). Proto-Chimakuan: Materials for a Reconstruction''. Working Papers in Linguistics (Vol. 7, № 2), Department of Linguistics, University of Hawaiʻi. Language families Mosan languages Endangered Chimakuan languages