Google Books Ngram Viewer

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

1950 - 1974 1975 - 1985 1986 - 1987 1988 - 1998 1999 - 2000 i hear and i forget English
1950 - 1974 1975 - 1993 1994 - 1995 1996 - 1997 1998 - 2000 i see and i remember English
1950 - 1973 1974 - 1993 1994 - 1995 1996 - 1997 1998 - 2000 i do and i understand English

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