Next to sound shifts, there are ample examples of suffix differences. Often simple suffix shifts (like switching between -the, -ske, -ke, -je, ...), sometimes the suffixes even depend on quite specific grammar rules for a certain dialect. Again taking West Flemish as an example. In that language, the words "ja" (yes) and "nee" (no) are also conjugated to the (often implicit) <answer>subject</answer> of the sentence. These separate grammar rules are a lot more difficult to imitate correctly than simple sound shifts, making it easy to recognise people who didn't grow up in a certain region, even decades after they moved.
What piece of a sentence does West Flemish match the case of a "yes" or "no" to?
subject