In primitive Italic IE k̂w-, ĝw-, ĝhw - became initially k, g, f, whether through an early gemination or assimilation or the loss of w it is impossible to make out. In any case the change occurred before the palatals fell together with the labiovelars, but apparently after k̂we preceding ł or m had become k̂wo : colostra, combrētum (10.03, 10.26) . Yet this is not certain, since these words may have original o .
A Wed, study studied this question.
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