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Indo-European
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Proto-Indo-European
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Historical Phonology
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Grammar: Other
pie-verbal-reduplication
e-
pie-nasal-infix
pie-ei-present
-ei
pie-thematic-present
-e
pie-sk-present
-ske-
pie-o-grade-root
pie-causative
-eie-
pie-augment
h₁e-
Phonetics
pie-o-grade-vowel
e > o