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five main active parts can be further divided, as many languages contrast sounds produced within the same major part of the vocal apparatus. The following 9 degrees of active articulatory areas are known to be contrastive (sorted such that the top-most is in the front-most area of the mouth and the bottom-most is in the rear-most area of the mouth):
*The lower lip (labial)
*Various parts of the front of the tongue (coronal):
**The tip of the tongue

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