Old Persian language

The Old Persian language is one of two Old Iranian languages. The other is Avestan). Old Persian was used during the Achaemenid era (c. 600 BC to 300 BC). Examples of Old Persian have been found in Iran, Iraq, Turkey and Egypt.
Classification.
Old Persian is an Old Iranian language, a member of the Southwestern Iranian language group. As an Iranian language, Old Persian is a member of the Indo-Iranian branch of the Indo-European language family.
Old Persian subsequently developed into Middle Persian, which is in turn the nominal ancestor of New Persian.
Phonology.
The following phonemes are expressed in the Old Persian script:
Vowels
Consonants
Grammar.
Nouns.
Old Persian stems:
Adjectives are declinable in similar way.
Verbs.
Voices&lt;br&gt;
Active, Middle (them. pres. -aiy-, -ataiy-), Passive (-ya-).
In Old Persian were used mostly the forms of first and third persons. Only Dual form used was "ajīvatam" 'both lived'.