Google Books Ngram Viewer

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

1940 - 1976 1977 - 2001 2002 - 2003 2004 - 2005 2006 - 2008 yoghurt English
1940 - 1975 1976 - 2001 2002 - 2003 2004 - 2005 2006 - 2008 yogurt English

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