*h₁e-h₁óp/h₁p-
http://lila-erc.eu/data/lexicalResources/LIV/id/Themes/61981855145106554065787586862869808082057913528365 <https://ontolex.github.io/morph/Morph>
perfect stem
*h₁e-h₁óp/h₁p-
PIE