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Old 30th Dec 2009, 21:00
  #38 (permalink)  
mnttech
 
Join Date: Dec 2007
Location: Denver, Colorado, USA
Posts: 197
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Only two tones but 4 letters!
That's incorrect, each letter is a different tone, so you hear two tones together, then the other two tones together, making it sound like just 2 tones.
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