English verb conjugation
MUST OPINE

Regular verb: opine - opined - opined

Affirmation

Simple form	V-ing form
I must opine you must opine he must opine we must opine you must opine they must opine	I must be opining you must be opining he must be opining we must be opining you must be opining they must be opining
Perfect	V-ing perfect
I must have opined you must have opined he must have opined we must have opined you must have opined they must have opined	I must have been opining you must have been opining he must have been opining we must have been opining you must have been opining they must have been opining

Negation

Simple form	V-ing form
I mustn't opine you mustn't opine he mustn't opine we mustn't opine you mustn't opine they mustn't opine	I mustn't be opining you mustn't be opining he mustn't be opining we mustn't be opining you mustn't be opining they mustn't be opining
Perfect	V-ing perfect
I mustn't have opined you mustn't have opined he mustn't have opined we mustn't have opined you mustn't have opined they mustn't have opined	I mustn't have been opining you mustn't have been opining he mustn't have been opining we mustn't have been opining you mustn't have been opining they mustn't have been opining

Interrogative form

Simple form	V-ing form
must I opine? must you opine? must he opine? must we opine? must you opine? must they opine?	must I be opining? must you be opining? must he be opining? must we be opining? must you be opining? must they be opining?
Perfect	V-ing perfect
must I have opined? must you have opined? must he have opined? must we have opined? must you have opined? must they have opined?	must I have been opining? must you have been opining? must he have been opining? must we have been opining? must you have been opining? must they have been opining?

Interro-negative form

Simple form	V-ing form
mustn't I opine? mustn't you opine? mustn't he opine? mustn't we opine? mustn't you opine? mustn't they opine?	mustn't I be opining? mustn't you be opining? mustn't he be opining? mustn't we be opining? mustn't you be opining? mustn't they be opining?
Perfect	V-ing perfect
mustn't I have opined? mustn't you have opined? mustn't he have opined? mustn't we have opined? mustn't you have opined? mustn't they have opined?	mustn't I have been opining? mustn't you have been opining? mustn't he have been opining? mustn't we have been opining? mustn't you have been opining? mustn't they have been opining?