Align each one so it’s centered on the stage.
Mouth poses need to be present on different keyframes of a single Graphic Symbol. Keeping each mouth pose within its own Graphic Symbol is a matter of choice, and may be useful for organizing the poses.
In the master mouth Symbol, consider adding frame labels to each keyframe for easy identification of mouth poses later on. The labels also appear in the lip-syncing dialog, and assist while mapping the visemes (shown in Step 5).
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