English verb conjugation
MUST MUSE

Regular verb: muse - mused - mused

Affirmation

Simple form	V-ing form
I must muse you must muse he must muse we must muse you must muse they must muse	I must be musing you must be musing he must be musing we must be musing you must be musing they must be musing
Perfect	V-ing perfect
I must have mused you must have mused he must have mused we must have mused you must have mused they must have mused	I must have been musing you must have been musing he must have been musing we must have been musing you must have been musing they must have been musing

Negation

Simple form	V-ing form
I mustn't muse you mustn't muse he mustn't muse we mustn't muse you mustn't muse they mustn't muse	I mustn't be musing you mustn't be musing he mustn't be musing we mustn't be musing you mustn't be musing they mustn't be musing
Perfect	V-ing perfect
I mustn't have mused you mustn't have mused he mustn't have mused we mustn't have mused you mustn't have mused they mustn't have mused	I mustn't have been musing you mustn't have been musing he mustn't have been musing we mustn't have been musing you mustn't have been musing they mustn't have been musing

Interrogative form

Simple form	V-ing form
must I muse? must you muse? must he muse? must we muse? must you muse? must they muse?	must I be musing? must you be musing? must he be musing? must we be musing? must you be musing? must they be musing?
Perfect	V-ing perfect
must I have mused? must you have mused? must he have mused? must we have mused? must you have mused? must they have mused?	must I have been musing? must you have been musing? must he have been musing? must we have been musing? must you have been musing? must they have been musing?

Interro-negative form

Simple form	V-ing form
mustn't I muse? mustn't you muse? mustn't he muse? mustn't we muse? mustn't you muse? mustn't they muse?	mustn't I be musing? mustn't you be musing? mustn't he be musing? mustn't we be musing? mustn't you be musing? mustn't they be musing?
Perfect	V-ing perfect
mustn't I have mused? mustn't you have mused? mustn't he have mused? mustn't we have mused? mustn't you have mused? mustn't they have mused?	mustn't I have been musing? mustn't you have been musing? mustn't he have been musing? mustn't we have been musing? mustn't you have been musing? mustn't they have been musing?