what are those long letter spellings called?

Question

For example, if instead of writing "oh" i wrote "ough"

Update:

I want to make a logo parody and I want to know the longest way I can spell "You" and "Tube" so that it is pronounced the same

Update 2:

im tired i cant delete this 34grbt f

edu3oiooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo444444444444444444444444444444444444444444444444444444444444444ijcfjcjcnincienocnppwppwps[ejc[ej[cje[2fdkjkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,Yoouxghe Toouxgghbbe

Answer 1

There's no such thing as "long letter spellings."

Answer 2

Ough is not a word in the English language.  Oh is an expression.  Stay in school.

Answer 3

They're called nothing because doing that's not a thing, unless you mean "misspellings."