What do the Long vowel rule and Palatalized long vowel rule represent? In relation to the Classical Japanese orthography what are the **Long vowel ( Chōon) rule** and the **Palatalized long vowel ( Kaiyōchōon) rule**? What would be some examples of them?

_I judged it as a question of what is said to be "classical kana orthography" or "historical kana orthography"_. _It is necessary when reading Japanese classics and Japanese poetry such as **Hyakunin Isshu**_.



_As a reference,here is one as a reading material, but I think this one is gathered neatly as the rule of your choice_.


_I extracted the rule. It becomes as follows_ :

> **** → **** ****
> **Historical kana** → **Modern kana** **Example**
> **orthography** **orthography**
>
> * → →
> * → →
> * → →
> * → →
> * → →
> * → →
> * → →
> * → →
> * → → → →
> * → → /
> * → →
> * → → →
>