Maybrat language
... that the Maybrat language of West Papua traditionally uses a base-5 counting system?
... that the <b id="mwA24"><a href="./Maybrat_language" id="mwA28" rel="mw:WikiLink" title="Maybrat language">Maybrat language</a></b> of <a href="./West_Papua_(province)" id="mwA3A" rel="mw:WikiLink" title="West Papua (province)">West Papua</a> traditionally uses a <a href="./Quinary" id="mwA3E" rel="mw:WikiLink" title="Quinary">base-5</a> counting system?