English verb conjugation
MUST DEFORCE

Regular verb: deforce - deforced - deforced

Affirmation

Simple form	V-ing form
I must deforce you must deforce he must deforce we must deforce you must deforce they must deforce	I must be deforcing you must be deforcing he must be deforcing we must be deforcing you must be deforcing they must be deforcing
Perfect	V-ing perfect
I must have deforced you must have deforced he must have deforced we must have deforced you must have deforced they must have deforced	I must have been deforcing you must have been deforcing he must have been deforcing we must have been deforcing you must have been deforcing they must have been deforcing

Negation

Simple form	V-ing form
I mustn't deforce you mustn't deforce he mustn't deforce we mustn't deforce you mustn't deforce they mustn't deforce	I mustn't be deforcing you mustn't be deforcing he mustn't be deforcing we mustn't be deforcing you mustn't be deforcing they mustn't be deforcing
Perfect	V-ing perfect
I mustn't have deforced you mustn't have deforced he mustn't have deforced we mustn't have deforced you mustn't have deforced they mustn't have deforced	I mustn't have been deforcing you mustn't have been deforcing he mustn't have been deforcing we mustn't have been deforcing you mustn't have been deforcing they mustn't have been deforcing

Interrogative form

Simple form	V-ing form
must I deforce? must you deforce? must he deforce? must we deforce? must you deforce? must they deforce?	must I be deforcing? must you be deforcing? must he be deforcing? must we be deforcing? must you be deforcing? must they be deforcing?
Perfect	V-ing perfect
must I have deforced? must you have deforced? must he have deforced? must we have deforced? must you have deforced? must they have deforced?	must I have been deforcing? must you have been deforcing? must he have been deforcing? must we have been deforcing? must you have been deforcing? must they have been deforcing?

Interro-negative form

Simple form	V-ing form
mustn't I deforce? mustn't you deforce? mustn't he deforce? mustn't we deforce? mustn't you deforce? mustn't they deforce?	mustn't I be deforcing? mustn't you be deforcing? mustn't he be deforcing? mustn't we be deforcing? mustn't you be deforcing? mustn't they be deforcing?
Perfect	V-ing perfect
mustn't I have deforced? mustn't you have deforced? mustn't he have deforced? mustn't we have deforced? mustn't you have deforced? mustn't they have deforced?	mustn't I have been deforcing? mustn't you have been deforcing? mustn't he have been deforcing? mustn't we have been deforcing? mustn't you have been deforcing? mustn't they have been deforcing?