Verb conjugation: potential

The potential form of a verb indicates that a give action is doable. For example:

りんごが食たべれる。
I can eat an apple.

It's not usually used to express permission (as in - being allowed to eat an apple) and instead is used to express the actual physical ability of being able to do it.

Conjugation table
KindPlainConjugated
1-dan見みる⟶見みれる
5-dan, す殺ころす⟶殺ころせる
5-dan, ぶ呼よぶ⟶呼よべる
5-dan, ぐ泳およぐ⟶泳およげる
5-dan, く書かく⟶書かける
5-dan, む読よむ⟶読よめる
5-dan, ぬ死しぬ⟶死しねる
5-dan, る走はしる⟶走はしれる
5-dan, つ待まつ⟶待まてる
5-dan, う使つかう⟶使つかえる
irregular行いく⟶行いける
irregular来くる⟶来これる
irregular
する
⟶できる
Examples
I did all I could.
I did what I could.
I can eat.