"ae" means single.

Ae corresponds to Korean keyboard and M D consonants. Which is the middle?

On the internet, "ae" is big mouth E according to the English phonetic alphabet.

So, what is it in Korean?

Korean is a phonological writing, but it is a syllabic writing.

So it should be written?

1.[] Mind. Heart and soul.

2.[] Trouble. Worried.

3.[] children. Kid.