*si-sékʷ/skʷ-{6a}

http://lila-erc.eu/data/lexicalResources/LIV/id/Themes/242351360329038781617250854249530539440313098621 <https://ontolex.github.io/morph/Morph>

present stem
*si-sékʷ/skʷ-{6a} 
PIE 

data from the linked data cloud