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tiers? <exists> 
size = 7 
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            text = "What" 
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            text = "is" 
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            text = "you're" 
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            text = "pointing" 
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            text = "at" 
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            text = "" 
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            mark = "L+H*" 
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            mark = "L-L%" 
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            mark = "L+H*" 
        points [2]:
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            mark = "L+H*" 
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            mark = "L-" 
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            time = 0.56043765787085753 
            mark = "H*" 
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            mark = "L+!H*" 
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            mark = "1" 
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            mark = "(3 possibly a 2 for the L-; otherwise 1)" 
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            mark = "1" 
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            text = "" 
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            text = "Pitch setting: 75-500" 
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            text = "The argument was made that this utterance is phonetically ambiguous. On the one hand, the contour is compatible with a single low phrase accent at ""at"" which spreads back to a single pitch accent at ""is"" (tones_a) or to an additional pitch accent at ""what"" (tones_b). On the other hand, the contour is also compatible with an additional low phrase accent (tones_b), which accounts for the fall at ""is"" and allows pitch reset of the following intermediate phrase."