-Phonetically: consist of a peak which has a little to obstruction to airflow, and it’s loud, and/or it’s preceded and followed by sound having greater obstruction and less loud.
- I : peak without onset nor coda.
- key: onset, peak without coda.
- am: peak, coda without onset.
- run: onset, peak and coda.
-Phonologically : the possible combination of phonemes in English.
Examples:
V : I
CV : key
CVC: pen
Linguistics 