English verb conjugation
MUST MUSHROOM

Regular verb: mushroom - mushroomed - mushroomed

Affirmation

Simple form	V-ing form
I must mushroom you must mushroom he must mushroom we must mushroom you must mushroom they must mushroom	I must be mushrooming you must be mushrooming he must be mushrooming we must be mushrooming you must be mushrooming they must be mushrooming
Perfect	V-ing perfect
I must have mushroomed you must have mushroomed he must have mushroomed we must have mushroomed you must have mushroomed they must have mushroomed	I must have been mushrooming you must have been mushrooming he must have been mushrooming we must have been mushrooming you must have been mushrooming they must have been mushrooming

Negation

Simple form	V-ing form
I mustn't mushroom you mustn't mushroom he mustn't mushroom we mustn't mushroom you mustn't mushroom they mustn't mushroom	I mustn't be mushrooming you mustn't be mushrooming he mustn't be mushrooming we mustn't be mushrooming you mustn't be mushrooming they mustn't be mushrooming
Perfect	V-ing perfect
I mustn't have mushroomed you mustn't have mushroomed he mustn't have mushroomed we mustn't have mushroomed you mustn't have mushroomed they mustn't have mushroomed	I mustn't have been mushrooming you mustn't have been mushrooming he mustn't have been mushrooming we mustn't have been mushrooming you mustn't have been mushrooming they mustn't have been mushrooming

Interrogative form

Simple form	V-ing form
must I mushroom? must you mushroom? must he mushroom? must we mushroom? must you mushroom? must they mushroom?	must I be mushrooming? must you be mushrooming? must he be mushrooming? must we be mushrooming? must you be mushrooming? must they be mushrooming?
Perfect	V-ing perfect
must I have mushroomed? must you have mushroomed? must he have mushroomed? must we have mushroomed? must you have mushroomed? must they have mushroomed?	must I have been mushrooming? must you have been mushrooming? must he have been mushrooming? must we have been mushrooming? must you have been mushrooming? must they have been mushrooming?

Interro-negative form

Simple form	V-ing form
mustn't I mushroom? mustn't you mushroom? mustn't he mushroom? mustn't we mushroom? mustn't you mushroom? mustn't they mushroom?	mustn't I be mushrooming? mustn't you be mushrooming? mustn't he be mushrooming? mustn't we be mushrooming? mustn't you be mushrooming? mustn't they be mushrooming?
Perfect	V-ing perfect
mustn't I have mushroomed? mustn't you have mushroomed? mustn't he have mushroomed? mustn't we have mushroomed? mustn't you have mushroomed? mustn't they have mushroomed?	mustn't I have been mushrooming? mustn't you have been mushrooming? mustn't he have been mushrooming? mustn't we have been mushrooming? mustn't you have been mushrooming? mustn't they have been mushrooming?