Cuneiform times of Parthian Empire (250 BC – AD 226). The last known cuneiform inscription, an astronomical text, was written in 75 AD. The complexity of the system prompted the development of a number of simplified versions of the script. Old Persian was written in a subset of simplified cuneiform characters known today as Old Persian cuneiform. It formed a semi-alphabetic syllabary, using far fewer wedge strokes than Assyrian used, together with a handful of logograms for frequently occurring words like "god" and "king". Ugaritic was written using the Ugaritic alphabet, a standard Semitic style alphabet (an "abjad") written using the
Ir (cuneiform) Ir (cuneiform) The cuneiform ir (more common usage), or er sign is a sign used in the Epic of Gilgamesh, and the Amarna letters. It is in a small group that have smaller, 3-verticals, as well as 2- and 1-vertical strokes, sitting on a lower horizontal cuneiform stroke. The sign is similar to the "sa (cuneiform)" sign, but sa's upper horizontal stroke is shorter than the lower anchored horizontal stroke. In the Amarna letters, it can also be confused with specific usages of ú-(the alphabetic u (by usage), Ú-1st prime–Ù-2nd prime is a complex, two-part large cuneiform sign, ="and", "but",