Choose the correct answer

Why does the Light Noon of emphasis (نونِ خفیفہ) enter only 8 conjugation forms instead of all 14?

Structural Rules of Heavy and Light Noon-e-Ta'keed

• Because it is morphologically blocked from following an Alif
• Because it can only be used by males
• Because it represents the past tense
• Due to a print constraint in the book