I have my idea which goes this way... I think people used body languages directly, through sounds and actions to bring and to shown up what updates over nature are doing around. As far as I now that prehistoric is the period were history does not already begin. Those times are very difficult for those ancient people to express their feelings in terms of languages and verbal skills. 
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Mga buang'2 mo kalay'2 mo'g utok answer among g'pangita dile idea mga bulok kalay'2 og utok
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hahahaha xD chill langf uyy , ayaw pag strong .