There are a few examples where a primitive short vowel became long in Ilkorin monosyllables, such as ᴹ✶mapā > Ilk. mâb (Ety/MAP, EtyAC/MAP) and ᴹ✶ndorē > Dor. dôr (EtyAC/NDOR). There was a similar development in Noldorin, but unlike Noldorin, there are numerous Ilkorin monosyllables where this change did not occur, such as bel, gad and nef. There does not seem to be a clear pattern to the few monosyllables where the vowel did lengthen.