[starlingdb](https://starlingdb.org/cgi-bin/query.cgi?root=config&morpho=0&basename=\data\ie\piet) [[r-wescott1993]] Simplified roots https://en.wiktionary.org/wiki/Category:Proto-Indo-European_lemmas [[Buck]] [[Pokorny]] [[Watkins]] [[Calin]] [Wiktionary](https://en.wiktionary.org/wiki/Category:Proto-Indo-European_roots), [Roots by Shape](https://en.wiktionary.org/wiki/Category:Proto-Indo-European_roots_by_shape)