The document discusses two vowel sounds: /aI/ and /I/. Vowel sound /aI/ is produced with the tongue low and front part raised, lips spread to neutral, and a wide jaw opening. It is found in words containing letters like i, y, igh, and ei. Vowel sound /I/ is produced with the tongue nearly half close, the front-hinder part of the tongue highest, lips spread or neutral, and a narrow to medium jaw opening. It is found in words containing letters like i, y, e, and a. Examples of words containing each vowel sound are provided.