*skorlupa cave (secondary) * -ъmь in North <span class="searchmatch">Slavic</span>, -omь in South <span class="searchmatch">Slavic</span>. *<span class="searchmatch">bьrloga</span> East <span class="searchmatch">Slavic</span>: Old East <span class="searchmatch">Slavic</span>: берлога (berloga) Belarusian: бярло́г (bjarlóh)...
(“fence”) *bьrlъ (“messy, deranged”) → *<span class="searchmatch">bьrloga</span> (“lair, hollow”) *-ogъ m * -asъ is the expected Balto-<span class="searchmatch">Slavic</span> form but is found only in some Old Czech...