The northeastern Iberian script is also known as Levantine Iberian or Iberian, because it is the Iberian script that was most frequently used, and was the main means of written expression of the Iberian language. The language is also expressed by the southeastern Iberian script and by the Greco-Iberian alphabet. To understand the relationship between northeastern Iberian and southeastern Iberian scripts, it is necessary to point out that they are two different scripts with different values for the same signs. However it is clear they have a common origin and the most accepted hypothesis is that northeastern Iberian script was derived from the southeastern Iberian script. There is no agreement on this, but some researchers conclude that it is linked to the Phoenician alphabet alone, whilst others believe the Greek alphabet also had a role.