Japanese words are spelled using characters that represent syllables (morae), rather than individual phonetic units (phonemes) as in the English alphabet. These characters are compiled into two syllabaries: hiragana and katakana. Japanese also makes extensive use of adopted Chinese characters, or kanji, which may be pronounced with one or more syllables. Therefore, when a word or phrase is abbreviated, it does not take the form of initials, but the key characters of the original phrase, such that a new word is made, often recognizably derived from the original. In contracted kanji words, the most common pattern of contraction is to take the first kanji of each word in a phrase and put them together as a portmanteau. In the example from the lead, using , the "Tō-" of "Tōkyō" and the "Dai-" of "Daigaku" becomes , the common abbreviation for the University of Tokyo.