Phonetics and the IPA 5, Exercise 1: vowel labels [i] close front unrounded [u] close back rounded [y] close front rounded [ɔ] open-mid back rounded [ɛ] open-mid front unrounded Order: height, backness, rounding. On the chart, the unrounded vowel sits to the left of its rounded partner in each cell (i / y, e / ø, ɛ / œ).