Google Books Ngram Viewer

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

1700 - 1720 1721 - 1812 1813 - 1824 1825 - 1836 1837 - 1850 esta Spanish
1700 - 1707 1708 - 1747 1748 - 1751 1752 - 1760 1761 - 1850 efta Spanish

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