English verb conjugation
MUST BLUR

Regular verb: blur - blurred - blurred

Affirmation

Simple form	V-ing form
I must blur you must blur she must blur we must blur you must blur they must blur	I must be blurring you must be blurring she must be blurring we must be blurring you must be blurring they must be blurring
Perfect	V-ing perfect
I must have blurred you must have blurred she must have blurred we must have blurred you must have blurred they must have blurred	I must have been blurring you must have been blurring she must have been blurring we must have been blurring you must have been blurring they must have been blurring

Negation

Simple form	V-ing form
I mustn't blur you mustn't blur she mustn't blur we mustn't blur you mustn't blur they mustn't blur	I mustn't be blurring you mustn't be blurring she mustn't be blurring we mustn't be blurring you mustn't be blurring they mustn't be blurring
Perfect	V-ing perfect
I mustn't have blurred you mustn't have blurred she mustn't have blurred we mustn't have blurred you mustn't have blurred they mustn't have blurred	I mustn't have been blurring you mustn't have been blurring she mustn't have been blurring we mustn't have been blurring you mustn't have been blurring they mustn't have been blurring

Interrogative form

Simple form	V-ing form
must I blur? must you blur? must she blur? must we blur? must you blur? must they blur?	must I be blurring? must you be blurring? must she be blurring? must we be blurring? must you be blurring? must they be blurring?
Perfect	V-ing perfect
must I have blurred? must you have blurred? must she have blurred? must we have blurred? must you have blurred? must they have blurred?	must I have been blurring? must you have been blurring? must she have been blurring? must we have been blurring? must you have been blurring? must they have been blurring?

Interro-negative form

Simple form	V-ing form
mustn't I blur? mustn't you blur? mustn't she blur? mustn't we blur? mustn't you blur? mustn't they blur?	mustn't I be blurring? mustn't you be blurring? mustn't she be blurring? mustn't we be blurring? mustn't you be blurring? mustn't they be blurring?
Perfect	V-ing perfect
mustn't I have blurred? mustn't you have blurred? mustn't she have blurred? mustn't we have blurred? mustn't you have blurred? mustn't they have blurred?	mustn't I have been blurring? mustn't you have been blurring? mustn't she have been blurring? mustn't we have been blurring? mustn't you have been blurring? mustn't they have been blurring?