English verb conjugation
MUST OPT

Regular verb: opt - opted - opted

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
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
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?