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
Cuneiform translated, studied or published", as there are only a few hundred qualified cuneiformists in the world. The cuneiform writing system was in use for more than three millennia, through several stages of development, from the 31st century BC down to the second century AD. Ultimately, it was completely replaced by alphabetic writing (in the general sense) in the course of the Roman era, and there are no cuneiform systems in current use. It had to be deciphered as a completely unknown writing system in 19th-century Assyriology. Successful completion of its deciphering is dated to 1857. The cuneiform script was developed