Fig. 13

Bubble charts showing the variant combinations employed by the six individual speakers who performed the task twice in a rounded and b unrounded environments. Numbers of speakers are represented by the area of the bubbles and are indicated in the center of the circles. Variant combinations indicated by capital letters on both axes are ordered so that adjacent combinations differ by only one variant. The [R] variant in b is in parentheses because it appeared in a speech error. The dashed diagonal line indicates identical variant combinations on both trials