must ventriloquise
Regular verb: ventriloquise - ventriloquised- ventriloquised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must ventriloquise
you must ventriloquise
he must ventriloquise
we must ventriloquise
you must ventriloquise
they must ventriloquise 	I must be ventriloquising
you must be ventriloquising
he must be ventriloquising
we must be ventriloquising
you must be ventriloquising
they must be ventriloquising	I must have ventriloquised
you must have ventriloquised
he must have ventriloquised
we must have ventriloquised
you must have ventriloquised
they must have ventriloquised	I must have been ventriloquising
you must have been ventriloquising
he must have been ventriloquising
we must have been ventriloquising
you must have been ventriloquising
they must have been ventriloquising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't ventriloquise
you mustn't ventriloquise
he mustn't ventriloquise
we mustn't ventriloquise
you mustn't ventriloquise
they mustn't ventriloquise 	I mustn't be ventriloquising
you mustn't be ventriloquising
he mustn't be ventriloquising
we mustn't be ventriloquising
you mustn't be ventriloquising
they mustn't be ventriloquising	I mustn't have ventriloquised
you mustn't have ventriloquised
he mustn't have ventriloquised
we mustn't have ventriloquised
you mustn't have ventriloquised
they mustn't have ventriloquised	I mustn't have been ventriloquising
you mustn't have been ventriloquising
he mustn't have been ventriloquising
we mustn't have been ventriloquising
you mustn't have been ventriloquising
they mustn't have been ventriloquising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I ventriloquise?
must you ventriloquise?
must he ventriloquise?
must we ventriloquise?
must you ventriloquise?
must they ventriloquise? 	must I be ventriloquising?
must you be ventriloquising?
must he be ventriloquising?
must we be ventriloquising?
must you be ventriloquising?
must they be ventriloquising? 	must I have ventriloquised?
must you have ventriloquised?
must he have ventriloquised?
must we have ventriloquised?
must you have ventriloquised?
must they have ventriloquised? 	must I have been ventriloquising?
must you have been ventriloquising?
must he have been ventriloquising?
must we have been ventriloquising?
must you have been ventriloquising?
must they have been ventriloquising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I ventriloquise?
mustn't you ventriloquise?
mustn't he ventriloquise?
mustn't we ventriloquise?
mustn't you ventriloquise?
mustn't they ventriloquise? 	mustn't I be ventriloquising?
mustn't you be ventriloquising?
mustn't he be ventriloquising?
mustn't we be ventriloquising?
mustn't you be ventriloquising?
mustn't they be ventriloquising? 	mustn't I have ventriloquised?
mustn't you have ventriloquised?
mustn't he have ventriloquised?
mustn't we have ventriloquised?
mustn't you have ventriloquised?
mustn't they have ventriloquised? 	mustn't I have been ventriloquising?
mustn't you have been ventriloquising?
mustn't he have been ventriloquising?
mustn't we have been ventriloquising?
mustn't you have been ventriloquising?
mustn't they have been ventriloquising?