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<iframe name="ngram_chart" src="https://books.google.com/ngrams/interactive_chart?content=implementor,implementer&year_start=1900&corpus=26&smoothing=3" width=900 height=500 marginwidth=0 marginheight=0 hspace=0 vspace=0 frameborder=0 scrolling=no></iframe>
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Part-of-speech tags
cook_VERB, _DET_ President _PROPN_
Wildcards
King of *, best *_NOUN
Inflections
shook_INF drive_VERB_INF
Arithmetic compositions
(color /(color + colour))
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I want:eng_2019, I want:eng_2009
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1900
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2022
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English (2019)
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English
2019
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implementor
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1900 - 1972
1973 - 1991
1992 - 1994
1995 - 2005
2006 - 2022
English
implementer
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1900 - 1975
1976 - 2002
2003 - 2005
2006 - 2017
2018 - 2022
English