English verb conjugation
MUST WIDEN

Regular verb: widen - widened - widened

Affirmation

Simple form	V-ing form
I must widen you must widen she must widen we must widen you must widen they must widen	I must be widening you must be widening she must be widening we must be widening you must be widening they must be widening
Perfect	V-ing perfect
I must have widened you must have widened she must have widened we must have widened you must have widened they must have widened	I must have been widening you must have been widening she must have been widening we must have been widening you must have been widening they must have been widening

Negation

Simple form	V-ing form
I mustn't widen you mustn't widen she mustn't widen we mustn't widen you mustn't widen they mustn't widen	I mustn't be widening you mustn't be widening she mustn't be widening we mustn't be widening you mustn't be widening they mustn't be widening
Perfect	V-ing perfect
I mustn't have widened you mustn't have widened she mustn't have widened we mustn't have widened you mustn't have widened they mustn't have widened	I mustn't have been widening you mustn't have been widening she mustn't have been widening we mustn't have been widening you mustn't have been widening they mustn't have been widening

Interrogative form

Simple form	V-ing form
must I widen? must you widen? must she widen? must we widen? must you widen? must they widen?	must I be widening? must you be widening? must she be widening? must we be widening? must you be widening? must they be widening?
Perfect	V-ing perfect
must I have widened? must you have widened? must she have widened? must we have widened? must you have widened? must they have widened?	must I have been widening? must you have been widening? must she have been widening? must we have been widening? must you have been widening? must they have been widening?

Interro-negative form

Simple form	V-ing form
mustn't I widen? mustn't you widen? mustn't she widen? mustn't we widen? mustn't you widen? mustn't they widen?	mustn't I be widening? mustn't you be widening? mustn't she be widening? mustn't we be widening? mustn't you be widening? mustn't they be widening?
Perfect	V-ing perfect
mustn't I have widened? mustn't you have widened? mustn't she have widened? mustn't we have widened? mustn't you have widened? mustn't they have widened?	mustn't I have been widening? mustn't you have been widening? mustn't she have been widening? mustn't we have been widening? mustn't you have been widening? mustn't they have been widening?