no longer does in Standard Japanese. The historical-kana-only spellings using ぢ are listed under modern spellings starting with じ. The different spellings for the sokuon depend on what mora (if any) was elided into the following consonant to form the geminate consonant. For example, 学期 (gakki "semester") is spelled がくき (gakuki) in historical kana because the on'yomi of 学 used in this compound is がく (gaku). Geminate consonants in native Japanese words were formed either by the elision of a long vowel, as in 真赤な (makka-na "bright red"; once まあかな, maaka-na), or by some random process, as in 屹度 (kitto "surely"; once きと, kito); such words are written with the full-size つ (tu) in historical kana. In general, a Japanese on'yomi can end in either a vowel, ち, つ, き, or く, (ち and つ corresponding to Middle Chinese final -t, and き and く corresponding to Middle Chinese final -k), so these are the only four kana which can replace the sokuon in historical kana. Historically, on'yomi could also end with pu (for the Middle Chinese final -p), which came to be written with ふ but pronounced u (as part of a diphthong). The last table in the first row applies only to the terminal (終止形 shūshikei) and attributive (連体形 rentaikei) forms of the classical auxiliary verb ～む (-mu), which are pronounced ん (n). While many other native Japanese words (for example, 汝 nanji archaic word for "you") with ん were once pronounced and/or written with む (mu), proper historical kana only uses む for ん in the case of the auxiliary verb, which is only used in classical Japanese. The historical spellings in the second row of tables represent every theoretical representation of their modern counterpart. It is possible, however, that some may not have occurred, or that they were so rare that they applied to only one or two words. It is also possible that some spellings listed in the modern spellings column may not occur in any Japanese word, but they are theoretically possible and may occur in onomatopoeia or in katakana transcriptions of foreign languages. Romanization Readers of English occasionally encounter words romanized according to historical kana usage. Here are some examples, with modern romanizations in parentheses: Kwannon (Kannon): A Bodhisattva Kwaidan (Kaidan), meaning ghost story, the title of a collection of Japanese ghost stories compiled by Lafcadio Hearn Kwansei Gakuin University (Kansai): A university