English verb conjugation
MUST PINE

Regular verb: pine - pined - pined

Affirmation

Simple form	V-ing form
I must pine you must pine he must pine we must pine you must pine they must pine	I must be pining you must be pining he must be pining we must be pining you must be pining they must be pining
Perfect	V-ing perfect
I must have pined you must have pined he must have pined we must have pined you must have pined they must have pined	I must have been pining you must have been pining he must have been pining we must have been pining you must have been pining they must have been pining

Negation

Simple form	V-ing form
I must not pine you must not pine he must not pine we must not pine you must not pine they must not pine	I must not be pining you must not be pining he must not be pining we must not be pining you must not be pining they must not be pining
Perfect	V-ing perfect
I must not have pined you must not have pined he must not have pined we must not have pined you must not have pined they must not have pined	I must not have been pining you must not have been pining he must not have been pining we must not have been pining you must not have been pining they must not have been pining

Interrogative form

Simple form	V-ing form
must I pine? must you pine? must he pine? must we pine? must you pine? must they pine?	must I be pining? must you be pining? must he be pining? must we be pining? must you be pining? must they be pining?
Perfect	V-ing perfect
must I have pined? must you have pined? must he have pined? must we have pined? must you have pined? must they have pined?	must I have been pining? must you have been pining? must he have been pining? must we have been pining? must you have been pining? must they have been pining?

Interro-negative form

Simple form	V-ing form
must I not pine? must you not pine? must he not pine? must we not pine? must you not pine? must they not pine?	must I not be pining? must you not be pining? must he not be pining? must we not be pining? must you not be pining? must they not be pining?
Perfect	V-ing perfect
must I not have pined? must you not have pined? must he not have pined? must we not have pined? must you not have pined? must they not have pined?	must I not have been pining? must you not have been pining? must he not have been pining? must we not have been pining? must you not have been pining? must they not have been pining?