the introduction, and the articles on the various IE proto-languages, language groups and language phonologies. Notes: Examples See the list of Proto-Indo-European roots hosted at Wiktionary. , ~ , "foot". Vedic Sanskrit: pā́t, pád- Avestan: paδa, pāδa Old Church Slavonic: pěšĭ, "on foot" Lithuanian: pėda, "foot bottom" Armenian: otn Tocharian: A pe, B pai Luwian: pa-da-, pa-ta- Ancient Greek: poús, podós Latin: pēs, pedis Celtiberian: ozas Gothic: fotus (*p -> f by Grimm's Law) , "three". Vedic Sanskrit: tráyas Avestan: θrāiiō Old Church Slavonic: trĭje Lithuanian: trỹs Albanian: tre Ancient Greek: treĩs Latin: trēs Old Irish: trí Welsh: tri Armenian: erekʿ Gothic: þreis (*t -> þ by Grimm's Law) , "hundred" (from earlier ) Vedic Sanskrit: śatám Younger Avestan: satəm Old Church Slavonic: sŭto Lithuanian: šim̃tas Tocharian: A känt, B känte Ancient Greek: hekatón Latin: centum (pronounced kentum) Old Irish: cét Welsh: cant Gothic: hund (from proto-Germanic *xund-) , "raw flesh" Vedic Sanskrit: kravís-, "raw meat" Lithuanian: kraũjas, "blood" Old Church Slavonic: kry, "blood" Ancient Greek: kréas, "meat" Latin: cruor, "raw blood" Old Irish: crú, "blood, gore" Old English: hrǣw, "raw" Sound laws within PIE A few phonological laws can be reconstructed that may have been effective prior to the final breakup of PIE by internal reconstruction. Sievers' law (Edgerton's law, Lindeman's option) Bartholomae's law Szemerényi's law Stang's law Siebs' law See also Centum and satem languages Balto-Slavic languages Italo-Celtic Proto-Indo-Iranian language Proto-Iranian Proto-Greek language Proto-Celtic Proto-Germanic Proto-Indo-European language Proto-Indo-Europeans Kurgan hypothesis Indo-European languages List of Indo-European languages Further reading References Indo-European linguistics Sound laws