What jussive marking appears in taʾmurī?

Imruʾ al-Qays: Address to Fāṭimah, Parting, and the Arrows of the Eyes (Verses 19–22)

• Loss of the nūn in one of the five verbal forms
• Adding a dual alif at the end
• Changing the verb into a passive participle
• Removing a feminine tāʾ from the beginning