Complex sentence: Of these commentaries, those of "Ilampooranar", "Deivachilaiyaaar" and "Natchinaarkiniyar" is regarded highly and the triumvarate are also called "Urai-asiriyargal".
Split into simpler sentences: Of these commentaries, those of "Ilampooranar", "Deivachilaiyaaar" and "Natchinaarkiniyar" are regarded highly. The triumvarate are also called "Urai-asiriyargal".