Yimas has predictable rules with regard to syllabification. They describe how syllable boundaries can be established through what they call "core syllabification". This syllabification of alveolar nasals also appears in some Swedish dialects . Paul L. Garvin did various descriptive work describing the phonemics, morphology, and syllabification in Ktunaxa. Word processing has automated the process of justification, making syllabification of shorter words often unnecessary. In some languages, the spoken syllables are also the basis of syllabification in writing. In most languages, the actually spoken syllables are the basis of syllabification in writing too. The syllabification of gaambar must be gaa.mbar then, and the syllabification of sambal sam.bal. However, Russian has a constraint on syllabification such that syllables cannot span multiple morphemes. Syllabification of stop-fricative sequences may therefore be lexicalized or a prosodic tendency. Syllabification is the separation of a word into syllables, whether spoken or written. Hyphens are occasionally used to denote syllabification, as in "syl-la-bi-fi-ca-tion".