Google Books Ngram Viewer

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

1980 1981 - 2004 2005 2006 - 2007 2008 swift as a swallow English
1980 - 1984 1985 - 2003 2004 2005 - 2007 2008 fast as a swallow English
1980 - 1991 1992 - 2003 2004 2005 2006 - 2008 fast as a cheetah English
1980 - 1982 1983 - 1982 1983 - 1999 2000 - 2007 2008 fast as a gazelle English

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