must deafen
Regular verb: deafen - deafened- deafened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must deafen
you must deafen
she must deafen
we must deafen
you must deafen
they must deafen 	I must be deafening
you must be deafening
she must be deafening
we must be deafening
you must be deafening
they must be deafening	I must have deafened
you must have deafened
she must have deafened
we must have deafened
you must have deafened
they must have deafened	I must have been deafening
you must have been deafening
she must have been deafening
we must have been deafening
you must have been deafening
they must have been deafening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not deafen
you must not deafen
she must not deafen
we must not deafen
you must not deafen
they must not deafen 	I must not be deafening
you must not be deafening
she must not be deafening
we must not be deafening
you must not be deafening
they must not be deafening	I must not have deafened
you must not have deafened
she must not have deafened
we must not have deafened
you must not have deafened
they must not have deafened	I must not have been deafening
you must not have been deafening
she must not have been deafening
we must not have been deafening
you must not have been deafening
they must not have been deafening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I deafen?
must you deafen?
must she deafen?
must we deafen?
must you deafen?
must they deafen? 	must I be deafening?
must you be deafening?
must she be deafening?
must we be deafening?
must you be deafening?
must they be deafening? 	must I have deafened?
must you have deafened?
must she have deafened?
must we have deafened?
must you have deafened?
must they have deafened? 	must I have been deafening?
must you have been deafening?
must she have been deafening?
must we have been deafening?
must you have been deafening?
must they have been deafening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not deafen?
must you not deafen?
must she not deafen?
must we not deafen?
must you not deafen?
must they not deafen? 	must I not be deafening?
must you not be deafening?
must she not be deafening?
must we not be deafening?
must you not be deafening?
must they not be deafening? 	must I not have deafened?
must you not have deafened?
must she not have deafened?
must we not have deafened?
must you not have deafened?
must they not have deafened? 	must I not have been deafening?
must you not have been deafening?
must she not have been deafening?
must we not have been deafening?
must you not have been deafening?
must they not have been deafening?