Google Books Ngram Viewer

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

1800 - 1868 1869 - 1987 1988 - 1994 1995 - 2002 2003 - 2008 franchir le rubicon French
1800 - 1805 1806 - 1823 1824 - 1832 1833 - 1956 1957 - 2008 passer le rubicon French

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