must vent
Regular verb: vent - vented- vented

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must vent
you must vent
she must vent
we must vent
you must vent
they must vent 	I must be venting
you must be venting
she must be venting
we must be venting
you must be venting
they must be venting	I must have vented
you must have vented
she must have vented
we must have vented
you must have vented
they must have vented	I must have been venting
you must have been venting
she must have been venting
we must have been venting
you must have been venting
they must have been venting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't vent
you mustn't vent
she mustn't vent
we mustn't vent
you mustn't vent
they mustn't vent 	I mustn't be venting
you mustn't be venting
she mustn't be venting
we mustn't be venting
you mustn't be venting
they mustn't be venting	I mustn't have vented
you mustn't have vented
she mustn't have vented
we mustn't have vented
you mustn't have vented
they mustn't have vented	I mustn't have been venting
you mustn't have been venting
she mustn't have been venting
we mustn't have been venting
you mustn't have been venting
they mustn't have been venting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I vent?
must you vent?
must she vent?
must we vent?
must you vent?
must they vent? 	must I be venting?
must you be venting?
must she be venting?
must we be venting?
must you be venting?
must they be venting? 	must I have vented?
must you have vented?
must she have vented?
must we have vented?
must you have vented?
must they have vented? 	must I have been venting?
must you have been venting?
must she have been venting?
must we have been venting?
must you have been venting?
must they have been venting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I vent?
mustn't you vent?
mustn't she vent?
mustn't we vent?
mustn't you vent?
mustn't they vent? 	mustn't I be venting?
mustn't you be venting?
mustn't she be venting?
mustn't we be venting?
mustn't you be venting?
mustn't they be venting? 	mustn't I have vented?
mustn't you have vented?
mustn't she have vented?
mustn't we have vented?
mustn't you have vented?
mustn't they have vented? 	mustn't I have been venting?
mustn't you have been venting?
mustn't she have been venting?
mustn't we have been venting?
mustn't you have been venting?
mustn't they have been venting?