Northwest Sumatra-Barrier IslandsSubgroup of 12 languagesAncestorsAustronesian 1256Malayo-Polynesian 1234Northwest Sumatra-Barrier IslandsGayo gay, a language of IndonesiaMentawai mwv, a language of IndonesiaSimeulue smr, a language of IndonesiaDescendants Batak 7Descendants Northern 3Batak Alas-Kluet btz, a language of IndonesiaBatak Dairi btd, a language of IndonesiaBatak Karo btx, a language of Indonesia Simalungan 1Batak Simalungun bts, a language of Indonesia Southern 3Batak Angkola akb, a language of IndonesiaBatak Mandailing btm, a language of IndonesiaBatak Toba bbc, a language of Indonesia Nias 2Nias nia, a language of IndonesiaSikule skh, a language of Indonesia
