Google Books Ngram Viewer

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

1750 - 1883 1884 - 1939 1940 - 1948 1949 - 1993 1994 - 2000 up north English
1750 - 1866 1867 - 1936 1937 - 1948 1949 - 1989 1990 - 2000 down south English
1750 - 1918 1919 - 1985 1986 - 1991 1992 - 1996 1997 - 2000 back east English
1750 - 1873 1874 - 1930 1931 - 1941 1942 - 1993 1994 - 2000 out west English

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