Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I must widen widen you must widen widen she must widen widen we must widen widen you must widen widen they must widen widen
V-ing form
I must be widen widening you must be widen widening she must be widen widening we must be widen widening you must be widen widening they must be widen widening
Perfect
I must have widen widened you must have widen widened she must have widen widened we must have widen widened you must have widen widened they must have widen widened
V-ing perfect
I must have been widen widening you must have been widen widening she must have been widen widening we must have been widen widening you must have been widen widening they must have been widen widening
Negation
Simple form
I mustn't widen widen you mustn't widen widen she mustn't widen widen we mustn't widen widen you mustn't widen widen they mustn't widen widen
V-ing form
I mustn't be widen widening you mustn't be widen widening she mustn't be widen widening we mustn't be widen widening you mustn't be widen widening they mustn't be widen widening
Perfect
I mustn't have widen widened you mustn't have widen widened she mustn't have widen widened we mustn't have widen widened you mustn't have widen widened they mustn't have widen widened
V-ing perfect
I mustn't have been widen widening you mustn't have been widen widening she mustn't have been widen widening we mustn't have been widen widening you mustn't have been widen widening they mustn't have been widen widening
Interrogative form
Simple form
must I widen widen? must you widen widen? must she widen widen? must we widen widen? must you widen widen? must they widen widen?
V-ing form
must I be widen widening? must you be widen widening? must she be widen widening? must we be widen widening? must you be widen widening? must they be widen widening?
Perfect
must I have widen widened? must you have widen widened? must she have widen widened? must we have widen widened? must you have widen widened? must they have widen widened?
V-ing perfect
must I have been widen widening? must you have been widen widening? must she have been widen widening? must we have been widen widening? must you have been widen widening? must they have been widen widening?
Interro-negative form
Simple form
mustn't I widen widen? mustn't you widen widen? mustn't she widen widen? mustn't we widen widen? mustn't you widen widen? mustn't they widen widen?
V-ing form
mustn't I be widen widening? mustn't you be widen widening? mustn't she be widen widening? mustn't we be widen widening? mustn't you be widen widening? mustn't they be widen widening?
Perfect
mustn't I have widen widened? mustn't you have widen widened? mustn't she have widen widened? mustn't we have widen widened? mustn't you have widen widened? mustn't they have widen widened?
V-ing perfect
mustn't I have been widen widening? mustn't you have been widen widening? mustn't she have been widen widening? mustn't we have been widen widening? mustn't you have been widen widening? mustn't they have been widen widening?