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 must not opine you must not opine he must not opine we must not opine you must not opine they must not opine	I must not be opining you must not be opining he must not be opining we must not be opining you must not be opining they must not be opining
Perfect	V-ing perfect
I must not have opined you must not have opined he must not have opined we must not have opined you must not have opined they must not have opined	I must not have been opining you must not have been opining he must not have been opining we must not have been opining you must not have been opining they must not 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
must I not opine? must you not opine? must he not opine? must we not opine? must you not opine? must they not opine?	must I not be opining? must you not be opining? must he not be opining? must we not be opining? must you not be opining? must they not be opining?
Perfect	V-ing perfect
must I not have opined? must you not have opined? must he not have opined? must we not have opined? must you not have opined? must they not have opined?	must I not have been opining? must you not have been opining? must he not have been opining? must we not have been opining? must you not have been opining? must they not have been opining?