The script was also widely used on commemorative stelae and carved reliefs to record the achievements of the ruler in whose honor the monument had been erected. The spoken language included many homophones and near-homophones, and in the beginning, similar-sounding words such as "life" and "arrow" [ti were written with the same symbol. After the Semites conquered Southern Mesopotamia, some signs gradually changed from being pictograms to syllabograms, most likely to make things clearer in writing. In that way, the sign for the word "arrow" would become the sign for the sound "ti".