Ratio CLXXXVII CCLXXXIX CCCXCI BWED10 cum CDXCIII DXCV DCCXXXI DCCCXLI MIII MCCXXV MDV MDCCCXLIX MMLXV MMDXXXVII MMMCDLXXXI (IV)CLXXXIX (V)CXXXIII (VII)DLXIX