Where does “убечь” come from?

убечь (Russian) comes from Russian бечь, from Proto-Slavic běťi, from Proto-Balto-Slavic bḗˀgtei, from Proto-Indo-European bʰégʷeti, from Proto-Indo-European bʰegʷ- — to flee; to run.

Ancestry of “убечь”, step by step

StepLanguageWordMeaning
1Russianбечь—
2Proto-SlavicběťiAlternative form of *běgati; to run, flee; to...
3Proto-Balto-Slavicbḗˀgteito flee, run
4Proto-Indo-Europeanbʰégʷeti—
5Proto-Indo-Europeanbʰegʷ-to flee; to run
Every word from Proto-Indo-European bʰegʷ- →Every word from Proto-Indo-European bʰégʷeti →Every word from Proto-Balto-Slavic bḗˀgtei →