From: Petusek
Message: 39104
Date: 2005-07-08
>You need a feminine in -ka to show the effect, as nomasculine or neuter
>ending causes this kind of palatalisation. The k--> c (and g --> dz)
>replacement is 100% productive, i.e.absolutely obligatory in all such
>feminines, native or borrowed, all andrecent alike, even in foreign
>proper names and acronyms treated asfeminines, cf. Osaka (Japan) :
>Osace, YMCA [imka] : Ymce, Ortega(Spanish surname) : Ortedze.