must opt
Regular verb: opt - opted- opted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must opt
you must opt
he must opt
we must opt
you must opt
they must opt 	I must be opting
you must be opting
he must be opting
we must be opting
you must be opting
they must be opting	I must have opted
you must have opted
he must have opted
we must have opted
you must have opted
they must have opted	I must have been opting
you must have been opting
he must have been opting
we must have been opting
you must have been opting
they must have been opting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't opt
you mustn't opt
he mustn't opt
we mustn't opt
you mustn't opt
they mustn't opt 	I mustn't be opting
you mustn't be opting
he mustn't be opting
we mustn't be opting
you mustn't be opting
they mustn't be opting	I mustn't have opted
you mustn't have opted
he mustn't have opted
we mustn't have opted
you mustn't have opted
they mustn't have opted	I mustn't have been opting
you mustn't have been opting
he mustn't have been opting
we mustn't have been opting
you mustn't have been opting
they mustn't have been opting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I opt?
must you opt?
must he opt?
must we opt?
must you opt?
must they opt? 	must I be opting?
must you be opting?
must he be opting?
must we be opting?
must you be opting?
must they be opting? 	must I have opted?
must you have opted?
must he have opted?
must we have opted?
must you have opted?
must they have opted? 	must I have been opting?
must you have been opting?
must he have been opting?
must we have been opting?
must you have been opting?
must they have been opting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I opt?
mustn't you opt?
mustn't he opt?
mustn't we opt?
mustn't you opt?
mustn't they opt? 	mustn't I be opting?
mustn't you be opting?
mustn't he be opting?
mustn't we be opting?
mustn't you be opting?
mustn't they be opting? 	mustn't I have opted?
mustn't you have opted?
mustn't he have opted?
mustn't we have opted?
mustn't you have opted?
mustn't they have opted? 	mustn't I have been opting?
mustn't you have been opting?
mustn't he have been opting?
mustn't we have been opting?
mustn't you have been opting?
mustn't they have been opting?