Google Books Ngram Viewer

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

1800 - 1912 1913 - 1984 1985 - 1992 1993 - 2000 2001 - 2008 any problem English
1800 - 1955 1956 - 1997 1998 - 2001 2002 - 2004 2005 - 2008 any problems English

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