If:
Then:
Example:
| أدْلُوٌ | → | أدْلٍ |
| تَعَلُّوٍ | → | تَعَلٍّ |
| تَعَالُوٍ | → | تَعَالٍ |
If:
Then:
Example:
| أَظْبُيٌ | → | أظْبٍ |
joining of two sākins. ↩
Morphological rule: a ي in the lām position after a ḍammah converts to a و.
Three rules for the defective verb: dropping the ḥarakah of a final wāw or yāʾ, and elision when it meets a sākin sister letter.
When wāw and yāʾ combine in one word under set conditions, the wāw becomes yāʾ and the two merge with tashdīd.
When two wāws meet at the end of the scale فُعُوْلٌ, both become a yāʾ with shaddah and the preceding ḍammah turns to a kasrah.
