<Tr> <Th> Languages </Th> <Td> Unknown (see Harappan language) </Td> </Tr> <Tr> <Th> Time period </Th> <Td> 3500--1900 BCE </Td> </Tr> <P> The Indus script (also known as the Harappan script) is a corpus of symbols produced by the Indus Valley Civilisation during the Kot Diji and Mature Harappan periods between 3500 and 1900 BCE . Most inscriptions containing these symbols are extremely short, making it difficult to judge whether or not these symbols constituted a script used to record a language, or even symbolise a writing system . In spite of many attempts,' the script' has not yet been deciphered, but efforts are ongoing . There is no known bilingual inscription to help decipher the script, and the script shows no significant changes over time . However, some of the syntax (if that is what it may be termed) varies depending upon location . </P> <P> The first publication of a seal with Harappan symbols dates to 1875, in a drawing by Alexander Cunningham . Since then, over 4,000 inscribed objects have been discovered, some as far afield as Mesopotamia . In the early 1970s, Iravatham Mahadevan published a corpus and concordance of Indus inscriptions listing 3,700 seals and 417 distinct signs in specific patterns . He also found that the average inscription contained five symbols and that the longest inscription contained only 14 symbols in a single line . </P>

The scripts of indus valley civilization was in language
find me the text answering this question