Whilst this articulation is attested in the lndo-European descendants as a purely paralinguistic form it is phonemic in the ancestral form dating back five millennia or more.
Ūessi tegund málhljķđamyndunar finnst hjá fķlki af indķevrķpskum uppruna sem tjáskipti án orđa, en er hljķđkerfisfræđileg arfleifđ sem má rekja aftur um fimmūúsund ár eđa meira.