The textbook's practice verbs can be used to apply the same morphological operation. These are active, masculine third-person singular examples with heavy emphasis:
Word / formMeaning / explanation
يَجْتَنِبُ ← لَيَجْتَنِبَنَّhe will certainly avoid.
يَسْمَعُ ← لَيَسْمَعَنَّhe will certainly hear.
يَتْرُكُ ← لَيَتْرُكَنَّhe will certainly leave.
يَكْتُبُ ← لَيَكْتُبَنَّhe will certainly write.
The root letters remain; the emphatic lām and doubled nūn are added, and the ordinary final ḍamma gives way to fatḥa.