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 mustn't pine you mustn't pine he mustn't pine we mustn't pine you mustn't pine they mustn't pine	I mustn't be pining you mustn't be pining he mustn't be pining we mustn't be pining you mustn't be pining they mustn't be pining
Perfect	V-ing perfect
I mustn't have pined you mustn't have pined he mustn't have pined we mustn't have pined you mustn't have pined they mustn't have pined	I mustn't have been pining you mustn't have been pining he mustn't have been pining we mustn't have been pining you mustn't have been pining they mustn't 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
mustn't I pine? mustn't you pine? mustn't he pine? mustn't we pine? mustn't you pine? mustn't they pine?	mustn't I be pining? mustn't you be pining? mustn't he be pining? mustn't we be pining? mustn't you be pining? mustn't they be pining?
Perfect	V-ing perfect
mustn't I have pined? mustn't you have pined? mustn't he have pined? mustn't we have pined? mustn't you have pined? mustn't they have pined?	mustn't I have been pining? mustn't you have been pining? mustn't he have been pining? mustn't we have been pining? mustn't you have been pining? mustn't they have been pining?