English verb conjugation
MUST DEFORM

Regular verb: deform - deformed - deformed

Affirmation

Simple form	V-ing form
I must deform you must deform she must deform we must deform you must deform they must deform	I must be deforming you must be deforming she must be deforming we must be deforming you must be deforming they must be deforming
Perfect	V-ing perfect
I must have deformed you must have deformed she must have deformed we must have deformed you must have deformed they must have deformed	I must have been deforming you must have been deforming she must have been deforming we must have been deforming you must have been deforming they must have been deforming

Negation

Simple form	V-ing form
I mustn't deform you mustn't deform she mustn't deform we mustn't deform you mustn't deform they mustn't deform	I mustn't be deforming you mustn't be deforming she mustn't be deforming we mustn't be deforming you mustn't be deforming they mustn't be deforming
Perfect	V-ing perfect
I mustn't have deformed you mustn't have deformed she mustn't have deformed we mustn't have deformed you mustn't have deformed they mustn't have deformed	I mustn't have been deforming you mustn't have been deforming she mustn't have been deforming we mustn't have been deforming you mustn't have been deforming they mustn't have been deforming

Interrogative form

Simple form	V-ing form
must I deform? must you deform? must she deform? must we deform? must you deform? must they deform?	must I be deforming? must you be deforming? must she be deforming? must we be deforming? must you be deforming? must they be deforming?
Perfect	V-ing perfect
must I have deformed? must you have deformed? must she have deformed? must we have deformed? must you have deformed? must they have deformed?	must I have been deforming? must you have been deforming? must she have been deforming? must we have been deforming? must you have been deforming? must they have been deforming?

Interro-negative form

Simple form	V-ing form
mustn't I deform? mustn't you deform? mustn't she deform? mustn't we deform? mustn't you deform? mustn't they deform?	mustn't I be deforming? mustn't you be deforming? mustn't she be deforming? mustn't we be deforming? mustn't you be deforming? mustn't they be deforming?
Perfect	V-ing perfect
mustn't I have deformed? mustn't you have deformed? mustn't she have deformed? mustn't we have deformed? mustn't you have deformed? mustn't they have deformed?	mustn't I have been deforming? mustn't you have been deforming? mustn't she have been deforming? mustn't we have been deforming? mustn't you have been deforming? mustn't they have been deforming?