must imagine
Regular verb: imagine - imagined- imagined

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must imagine
you must imagine
she must imagine
we must imagine
you must imagine
they must imagine 	I must be imagining
you must be imagining
she must be imagining
we must be imagining
you must be imagining
they must be imagining	I must have imagined
you must have imagined
she must have imagined
we must have imagined
you must have imagined
they must have imagined	I must have been imagining
you must have been imagining
she must have been imagining
we must have been imagining
you must have been imagining
they must have been imagining	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't imagine
you mustn't imagine
she mustn't imagine
we mustn't imagine
you mustn't imagine
they mustn't imagine 	I mustn't be imagining
you mustn't be imagining
she mustn't be imagining
we mustn't be imagining
you mustn't be imagining
they mustn't be imagining	I mustn't have imagined
you mustn't have imagined
she mustn't have imagined
we mustn't have imagined
you mustn't have imagined
they mustn't have imagined	I mustn't have been imagining
you mustn't have been imagining
she mustn't have been imagining
we mustn't have been imagining
you mustn't have been imagining
they mustn't have been imagining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I imagine?
must you imagine?
must she imagine?
must we imagine?
must you imagine?
must they imagine? 	must I be imagining?
must you be imagining?
must she be imagining?
must we be imagining?
must you be imagining?
must they be imagining? 	must I have imagined?
must you have imagined?
must she have imagined?
must we have imagined?
must you have imagined?
must they have imagined? 	must I have been imagining?
must you have been imagining?
must she have been imagining?
must we have been imagining?
must you have been imagining?
must they have been imagining? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I imagine?
mustn't you imagine?
mustn't she imagine?
mustn't we imagine?
mustn't you imagine?
mustn't they imagine? 	mustn't I be imagining?
mustn't you be imagining?
mustn't she be imagining?
mustn't we be imagining?
mustn't you be imagining?
mustn't they be imagining? 	mustn't I have imagined?
mustn't you have imagined?
mustn't she have imagined?
mustn't we have imagined?
mustn't you have imagined?
mustn't they have imagined? 	mustn't I have been imagining?
mustn't you have been imagining?
mustn't she have been imagining?
mustn't we have been imagining?
mustn't you have been imagining?
mustn't they have been imagining?