I'm studying Turkish, and regarding the locative, I've learned that it is implemented by adding the suffix -DA or -TA, the latter being used when the word starts with "p, ç, t, k, f, h, s, and ş".
So some examples from Duolingo are:
- Park means park and the locative used to say "in/at the park" is parkta
- Otel means hotel and the locative used to say "in/at the hotel" is otelde
- Banyo means bathroom and the locative used to say "in/at the bathroom" is banyoda
- Bakkal means store and the locative used to say "in/at the store" is bakkalda
- Okul means school and the locative used to say "in/at the school" is okulda
My question here is: sometimes the suffix is really -DA as in okulda, and sometimes the suffix is -DE as in otelde.
How does one decide if it should be -da or -de? Is any other possibility for the locative other than -da, -de, -ta and -te?
If so, for each word what decides the form of the suffix to be used?