All Sino-Korean morphemes are monosyllabic as in Chinese, whereas native Korean morphemes can be polysyllabic. Rising glides can occur at any time and at either monosyllabic or polysyllabic words. A few polysyllabic words become monosyllabic though, like "mon" (monitor), literally means computer monitor. Although Chinese characters represent single syllables, Mandarin Chinese is a polysyllabic language. Polysyllabic words are generally written with one character per syllable. Polysyllabic words are never stressed on the first syllable. General masculine nouns and polysyllabic feminine proper names ending in -"a" can have either. Nouns are derived by compounding; for example, Mandarin Chinese is rich in polysyllabic words. In polysyllabic words, tone is not important except in the first syllable. See polysyllabic Chinese morphemes for further discussion. There are also difficulties in creating consonant clusters and polysyllabic words. Nouns stressed in this way are declined in the same manner as other polysyllabic nouns. They are used to differentiate polysyllabic words with otherwise identical pronunciation. The Yuchi verb consists of a mono- or polysyllabic stem modified almost exclusively by suffixing. Final "-am", which appears in polysyllabic verbs, is always unstressed.