Google Books Ngram Viewer

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

1600 - 1690 1691 - 1707 1708 - 1722 1723 - 1982 1983 - 2008 it is what it is English

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