English verb conjugation
MUST PAIN

Regular verb: pain - pained - pained

Affirmation

Simple form	V-ing form
I must pain you must pain he must pain we must pain you must pain they must pain	I must be paining you must be paining he must be paining we must be paining you must be paining they must be paining
Perfect	V-ing perfect
I must have pained you must have pained he must have pained we must have pained you must have pained they must have pained	I must have been paining you must have been paining he must have been paining we must have been paining you must have been paining they must have been paining

Negation

Simple form	V-ing form
I must not pain you must not pain he must not pain we must not pain you must not pain they must not pain	I must not be paining you must not be paining he must not be paining we must not be paining you must not be paining they must not be paining
Perfect	V-ing perfect
I must not have pained you must not have pained he must not have pained we must not have pained you must not have pained they must not have pained	I must not have been paining you must not have been paining he must not have been paining we must not have been paining you must not have been paining they must not have been paining

Interrogative form

Simple form	V-ing form
must I pain? must you pain? must he pain? must we pain? must you pain? must they pain?	must I be paining? must you be paining? must he be paining? must we be paining? must you be paining? must they be paining?
Perfect	V-ing perfect
must I have pained? must you have pained? must he have pained? must we have pained? must you have pained? must they have pained?	must I have been paining? must you have been paining? must he have been paining? must we have been paining? must you have been paining? must they have been paining?

Interro-negative form

Simple form	V-ing form
must I not pain? must you not pain? must he not pain? must we not pain? must you not pain? must they not pain?	must I not be paining? must you not be paining? must he not be paining? must we not be paining? must you not be paining? must they not be paining?
Perfect	V-ing perfect
must I not have pained? must you not have pained? must he not have pained? must we not have pained? must you not have pained? must they not have pained?	must I not have been paining? must you not have been paining? must he not have been paining? must we not have been paining? must you not have been paining? must they not have been paining?