Exhaustive Overview of Hiragana Seion, Dakuon and Yoon Charts

Hiragana Seion Structure and Component Analysis

The fundamental structure of Hiragana script begins with the Seion chart, which represents the pure, unvoiced sounds of the Japanese language. As documented on Page $1$, this system is organized by a matrix of vowels and consonants. The primary vowel sounds are represented by the characters for $a$, $i$, $u$, $e$, and $o$. These are categorized into distinct consonant rows including $K$, $S$, $T$, $N$, $H$, $M$, $Y$, $R$, and $W$. The phonetic layout for the basic characters is presented in specific sequences. The first row consists of the sounds あかさたなはまやらわ, representing the basic consonant-vowel combinations for the vowel $a$. The second row, corresponding to the vowel $i$, includes きしちにひみ, with an additional emphasis on に. The third row, defined by the vowel $u$, contains the characters うくすつぬぶむゆるを, along with the distinct entries ぐず and ぶぷ, which signify variations within this phonetic group. The fourth row, focused on the vowel $e$, lists けせてね as the primary set, followed by the specific notations め, れ, and ぜ. Finally, the vowel $o$ row is characterized by the sequence そのほもよろん, preceded by the consonant labels $ko$, $SO$, $to$, and $ho$.

Dakuon and Handakuon Phonetic Variations

The Dakuon and Handakuon charts expand the phonetic range of Hiragana by adding diacritical marks (dakuten and handakuten) to indicate voiced or specialized plosive sounds. The primary consonant categories for these modifications are $G$, $Z$, $D$, $B$, and $P$. Within the $i$ vowel row for these voiced sounds, the transcript identifies the specific characters ぎじちび, which correspond to the Romanized labels $gi$, $ji$, $di$, $bi$, and $pi$. Further modifications are noted for the $u$ vowel group, where the transcript highlights the characters ぐ, ず, ぶ, and ぷ, signifying the sounds $gu$, $zu$, $du$, $bu$, and $pu$. The $e$ row for these variations includes げ, ぜ, で, べ, and ぺ, represented by the labels $ge$, $ze$, $de$, $be$, and $pe$. The final group under the $o$ vowel row includes ご, ぞ, ど, ぼ, and ぽ, which are Romanized as $go$, $zo$, $do$, $bo$, and $po$. A unique entry, ばば, is noted within the Dakuon sequence, highlighting specific character repetitions or examples provided in the source material.

Yoon: Contracted Sounds and Compound Phonetics

Yoon sounds represent the contraction of a base character ending in the vowel $i$ with a smaller version of the characters や ($ya$), ゆ ($yu$), or よ ($yo$). The transcript lists these complex sounds in terms of their phonetic output and character compositions. For the series ending in $ya$, the listed sounds include $kya$, followed by a sequence of characters: じゃ, ちゃ, じゃ, じゃ, みゃ, りゃ, ぎゃ, じゃ, ぢゃ, びゅ, and びゃ. This segment includes various voiced and unvoiced combinations such as those based on $S$, $T$, $H$, and $B$.

For the series associated with the vowel $u$ ($kyu$), the transcript provides the Romanized labels $shu$, $chu$, $hyu$, $jyu$, $dyu$, and $byu$. This is followed by a comprehensive list of character combinations: ぎゅ, しゅ, ちゅ, じゅ, びゅ, みゆ, りゅ, ぎゅ, じゅ, ぢゅ, ぴゅ, and ぴゅ. These entries capture both standard and voiced contractions across multiple consonant families.

For the series associated with the vowel $o$ ($kyo$), the transcript lists the phonetic markers $sho$, $cho$, $nyo$, $hyo$, $myo$, $ryo$, $jyo$, $dyo$, and $byo$. The corresponding character list provided is きょ, しょ, ちょ, にょ, ひょ, みょ, りょ, ぎょ, じょ, ぢょ, ぴょ, and the specialized entry んぴょ. These representations detail the full breadth of the contracted phonetic system used in modern Japanese writing as presented in the chart on Page $1$.