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 must not gloom you must not gloom he must not gloom we must not gloom you must not gloom they must not gloom	I must not be glooming you must not be glooming he must not be glooming we must not be glooming you must not be glooming they must not be glooming
Perfect	V-ing perfect
I must not have gloomed you must not have gloomed he must not have gloomed we must not have gloomed you must not have gloomed they must not have gloomed	I must not have been glooming you must not have been glooming he must not have been glooming we must not have been glooming you must not have been glooming they must not 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
must I not gloom? must you not gloom? must he not gloom? must we not gloom? must you not gloom? must they not gloom?	must I not be glooming? must you not be glooming? must he not be glooming? must we not be glooming? must you not be glooming? must they not be glooming?
Perfect	V-ing perfect
must I not have gloomed? must you not have gloomed? must he not have gloomed? must we not have gloomed? must you not have gloomed? must they not have gloomed?	must I not have been glooming? must you not have been glooming? must he not have been glooming? must we not have been glooming? must you not have been glooming? must they not have been glooming?