Google Books Ngram Viewer

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

1938 - 1943 1944 - 1945 1946 - 1977 1978 - 2000 2001 - 2008 boche French
1938 - 1945 1946 - 1986 1987 1988 - 1996 1997 - 2008 chleuh French

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