What is the assessment for partial loss of speech based on articulation points?

Primary text

An alternative view holds that the *Diyah* should be divided according to the letters articulated by the tongue, excluding those articulated by the lip (Baa, Mim, Fa, Waw) and the letters of the throat (Hamza, Haa, Haa, Kha, Ain, Ghain). These excluded letters total ten. The remaining eighteen letters articulated by the tongue are where the compensation for the loss of speech rests, as the full *Diyah* is due for the cutting of the tongue, and the loss of these specific letters alone warrants compensation if the tongue remains. Under this calculation, the loss of one letter requires half of one-ninth of the *Diyah*, and the loss of two letters requires one-ninth of the *Diyah*.