Google Books Ngram Viewer

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

1800 - 1972 1973 - 2004 2005 - 2006 2007 2008 fast as a cheetah English
1800 - 1946 1947 - 1948 1949 - 1975 1976 - 1992 1993 - 2004 fast as a gazelle English
1800 - 1877 1878 - 1916 1917 1918 - 1955 1956 - 2001 fast as a swallow English

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