If:
Then:
Example:
| كَوْنُوْنَةٌ | → | كَيْنُوْنَةٌ |
When a plural on the scale of فُعْلٌ or فُعْلى has yāʾ as its ʿayn kalimah, the preceding letter takes a kasrah.
When a yāʾ stands as the lām kalimah after a ḍammah, it converts to a wāw, the transformation that turns نَهُيَ into نَهُوَ.
On the scale of fuʿlā with a wāw lām, the wāw turns to yāʾ; on faʿlā with a yāʾ lām, the yāʾ turns to wāw.
When the fāʾ of iftiʿāl is an original wāw or yāʾ, change it to tāʾ and assimilate with the tāʾ of iftiʿāl.
