English verb conjugation
MUST LIMP

Regular verb: limp - limped - limped

Affirmation

Simple form	V-ing form
I must limp you must limp he must limp we must limp you must limp they must limp	I must be limping you must be limping he must be limping we must be limping you must be limping they must be limping
Perfect	V-ing perfect
I must have limped you must have limped he must have limped we must have limped you must have limped they must have limped	I must have been limping you must have been limping he must have been limping we must have been limping you must have been limping they must have been limping

Negation

Simple form	V-ing form
I mustn't limp you mustn't limp he mustn't limp we mustn't limp you mustn't limp they mustn't limp	I mustn't be limping you mustn't be limping he mustn't be limping we mustn't be limping you mustn't be limping they mustn't be limping
Perfect	V-ing perfect
I mustn't have limped you mustn't have limped he mustn't have limped we mustn't have limped you mustn't have limped they mustn't have limped	I mustn't have been limping you mustn't have been limping he mustn't have been limping we mustn't have been limping you mustn't have been limping they mustn't have been limping

Interrogative form

Simple form	V-ing form
must I limp? must you limp? must he limp? must we limp? must you limp? must they limp?	must I be limping? must you be limping? must he be limping? must we be limping? must you be limping? must they be limping?
Perfect	V-ing perfect
must I have limped? must you have limped? must he have limped? must we have limped? must you have limped? must they have limped?	must I have been limping? must you have been limping? must he have been limping? must we have been limping? must you have been limping? must they have been limping?

Interro-negative form

Simple form	V-ing form
mustn't I limp? mustn't you limp? mustn't he limp? mustn't we limp? mustn't you limp? mustn't they limp?	mustn't I be limping? mustn't you be limping? mustn't he be limping? mustn't we be limping? mustn't you be limping? mustn't they be limping?
Perfect	V-ing perfect
mustn't I have limped? mustn't you have limped? mustn't he have limped? mustn't we have limped? mustn't you have limped? mustn't they have limped?	mustn't I have been limping? mustn't you have been limping? mustn't he have been limping? mustn't we have been limping? mustn't you have been limping? mustn't they have been limping?