In English, there is only one - friend.
(for other languages, see the related question)
which or witch
There are 3 ways to spell the word "shell" - shell, she'll, and SHL.
One.
That is the only way to correctly spell it in English
just the one...
DA is not a word so there are no spellings for it.
There is only one way to spell the word "lie".
The correct spelling is "scissors," and there is only one way to spell this word.
There are three ways which is too, to, and two which is called a homophone.
The word can be correctly spelled Hannover and Hanover.
There is only one English spelling of the word "strong."
There is only one correct spelling of that word: honor