Google Books Ngram Viewer

Graph these comma-separated phrases:
case-insensitive
between and from the corpus with smoothing of .  
Search in Google Books:

1800 - 1921 1922 - 1925 1926 - 1967 1968 - 1999 2000 - 2008 box m English

Run your own experiment! Raw data is available for download here.
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