Form third masculine singular heavy emphasis from يَسْمَعُ.

Emphatic Lām and the Heavy and Light Nūn Paradigms

• لَيَسْمَعَنَّ
• لَنْ يَسْمَعَ
• لَيُسْمَعَنَّ
• لَمْ يَسْمَعْ