English verb conjugation
MUST GLOOM

Regular verb: gloom - gloomed - gloomed

Affirmation

Simple form	V-ing form
I must gloom you must gloom he must gloom we must gloom you must gloom they must gloom	I must be glooming you must be glooming he must be glooming we must be glooming you must be glooming they must be glooming
Perfect	V-ing perfect
I must have gloomed you must have gloomed he must have gloomed we must have gloomed you must have gloomed they must have gloomed	I must have been glooming you must have been glooming he must have been glooming we must have been glooming you must have been glooming they must have been glooming

Negation

Simple form	V-ing form
I mustn't gloom you mustn't gloom he mustn't gloom we mustn't gloom you mustn't gloom they mustn't gloom	I mustn't be glooming you mustn't be glooming he mustn't be glooming we mustn't be glooming you mustn't be glooming they mustn't be glooming
Perfect	V-ing perfect
I mustn't have gloomed you mustn't have gloomed he mustn't have gloomed we mustn't have gloomed you mustn't have gloomed they mustn't have gloomed	I mustn't have been glooming you mustn't have been glooming he mustn't have been glooming we mustn't have been glooming you mustn't have been glooming they mustn't have been glooming

Interrogative form

Simple form	V-ing form
must I gloom? must you gloom? must he gloom? must we gloom? must you gloom? must they gloom?	must I be glooming? must you be glooming? must he be glooming? must we be glooming? must you be glooming? must they be glooming?
Perfect	V-ing perfect
must I have gloomed? must you have gloomed? must he have gloomed? must we have gloomed? must you have gloomed? must they have gloomed?	must I have been glooming? must you have been glooming? must he have been glooming? must we have been glooming? must you have been glooming? must they have been glooming?

Interro-negative form

Simple form	V-ing form
mustn't I gloom? mustn't you gloom? mustn't he gloom? mustn't we gloom? mustn't you gloom? mustn't they gloom?	mustn't I be glooming? mustn't you be glooming? mustn't he be glooming? mustn't we be glooming? mustn't you be glooming? mustn't they be glooming?
Perfect	V-ing perfect
mustn't I have gloomed? mustn't you have gloomed? mustn't he have gloomed? mustn't we have gloomed? mustn't you have gloomed? mustn't they have gloomed?	mustn't I have been glooming? mustn't you have been glooming? mustn't he have been glooming? mustn't we have been glooming? mustn't you have been glooming? mustn't they have been glooming?