In the later stages of Akkadian the mimation ( word-final "-m " )-along with nunation ( dual final "-n " )-that occurs at the end of most case endings has disappeared, except in the locative.
22.
For the indefinite accusative, the " " + nunation is added to an e . g ., which is added to the ending of all nouns ( e . g . " he was tired " ) not ending with a followed by or a.
23.
Indefinite singular nouns ( other than those that end in long ) add a final /-n / to the case-marking vowels, giving /-un /, /-an / or /-in / ( which is also referred to as nunation or tanw + n ).
24.
The lack of a marker for definiteness does not necessarily make a word indefinite; in fact, many definite nouns ( proper names ) take nunation, as for example in the expression ( " " : " I witness that Muhammad is the messenger of God . " ), in which the name Mu % ammad, a definite noun, is nunated.
25.
Later still, vowel marks and the " " were introduced, beginning some time in the latter half of the 7th century, preceding the first invention of Umayyad era by Abu al-Aswad al-Du'ali a dot above = " ", a dot below = " ", a dot on the line = " ", and doubled dots indicated nunation.
