What were the criteria for determining that there were too many unique 2-grams a...

		dmoy on Jan 20, 2012 \| parent \| context \| favorite \| on: How Google Code Search Worked What were the criteria for determining that there were too many unique 2-grams and too few 3-grams? Did it just come down to too much memory for the former, and barely enough memory for 3-grams?

Compare 256^2, 256^3, 256^4.