English verb conjugation
MUST BROOD

Regular verb: brood - brooded - brooded

Affirmation

Simple form	V-ing form
I must brood you must brood she must brood we must brood you must brood they must brood	I must be brooding you must be brooding she must be brooding we must be brooding you must be brooding they must be brooding
Perfect	V-ing perfect
I must have brooded you must have brooded she must have brooded we must have brooded you must have brooded they must have brooded	I must have been brooding you must have been brooding she must have been brooding we must have been brooding you must have been brooding they must have been brooding

Negation

Simple form	V-ing form
I mustn't brood you mustn't brood she mustn't brood we mustn't brood you mustn't brood they mustn't brood	I mustn't be brooding you mustn't be brooding she mustn't be brooding we mustn't be brooding you mustn't be brooding they mustn't be brooding
Perfect	V-ing perfect
I mustn't have brooded you mustn't have brooded she mustn't have brooded we mustn't have brooded you mustn't have brooded they mustn't have brooded	I mustn't have been brooding you mustn't have been brooding she mustn't have been brooding we mustn't have been brooding you mustn't have been brooding they mustn't have been brooding

Interrogative form

Simple form	V-ing form
must I brood? must you brood? must she brood? must we brood? must you brood? must they brood?	must I be brooding? must you be brooding? must she be brooding? must we be brooding? must you be brooding? must they be brooding?
Perfect	V-ing perfect
must I have brooded? must you have brooded? must she have brooded? must we have brooded? must you have brooded? must they have brooded?	must I have been brooding? must you have been brooding? must she have been brooding? must we have been brooding? must you have been brooding? must they have been brooding?

Interro-negative form

Simple form	V-ing form
mustn't I brood? mustn't you brood? mustn't she brood? mustn't we brood? mustn't you brood? mustn't they brood?	mustn't I be brooding? mustn't you be brooding? mustn't she be brooding? mustn't we be brooding? mustn't you be brooding? mustn't they be brooding?
Perfect	V-ing perfect
mustn't I have brooded? mustn't you have brooded? mustn't she have brooded? mustn't we have brooded? mustn't you have brooded? mustn't they have brooded?	mustn't I have been brooding? mustn't you have been brooding? mustn't she have been brooding? mustn't we have been brooding? mustn't you have been brooding? mustn't they have been brooding?