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
Tu (cuneiform) UBARA-TU.TU. Two other uses of "TU" in the Epic are as follows: "TU" is also the Akkadian language verb, "erēbu", for English language ""to enter"", ""to set"", used in Tablet III and VII. For the sumerogram "TU.MUŠEN", for Akkadian "summu", the English "dove", it is used 2-times in the Gilgamesh flood myth-(Noah's Ark story), Tablet XI. Tu (cuneiform) The cuneiform sign tu, and for TU-(the sumerogram, capital letter (majuscule), in the Hittite language and other cuneiform texts, is a common-use syllabic sign for ""tu"", and also with a syllabic use for ""t"", or ""u"". It is not a multi-use sign,