Where does “вивчений” come from?

вивчений (Ukrainian) comes from Ukrainian ви́вчити, from Ukrainian ви́-, from Proto-Slavic vy-, from Proto-Balto-Slavic ū́, from Proto-Indo-European úd — out, outward.

Ancestry of “вивчений”, step by step

StepLanguageWordMeaning
1Ukrainianви́вчитиto study
2Ukrainianви́-out, ex- describing an action of moving outside from inside
3Proto-Slavicvy-out
4Proto-Balto-Slavicū́—
5Proto-Indo-Europeanúdout, outward
Every word from Proto-Indo-European úd →Every word from Ukrainian ви́- →Every word from Proto-Balto-Slavic ū́ →