Google Books Ngram Viewer

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

1800 - 1820 1821 - 1869 1870 - 1882 1883 - 1971 1972 - 2000 le sais que trop French
1800 - 1812 1813 - 1822 1823 - 1908 1909 - 1979 1980 - 2000 le sais que trop bien French
1800 - 1819 1820 - 1868 1869 - 1881 1882 - 1969 1970 - 2000 ne le sais que trop French

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