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If you play four major sixths up, you will reach the octave that is three octaves higher than the beginning note.If you play four major sixths down, you will reach the octave that is three octaves lower than the beginning note. 
Play four major sixths up to reach three octaves higher 
Play four major sixths down to reach three octaves lower 
Play ascending major sixths starting a half step higher for each interval then play descending major sixths starting a half step higher  for each interval. 
Play descending major sixths starting a half step lower for each interval then play ascending major sixths starting a half step lower  for each interval.
						 
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