English verb conjugation
MUST MUSH

Regular verb: mush - mushed - mushed

Affirmation

Simple form	V-ing form
I must mush you must mush he must mush we must mush you must mush they must mush	I must be mushing you must be mushing he must be mushing we must be mushing you must be mushing they must be mushing
Perfect	V-ing perfect
I must have mushed you must have mushed he must have mushed we must have mushed you must have mushed they must have mushed	I must have been mushing you must have been mushing he must have been mushing we must have been mushing you must have been mushing they must have been mushing

Negation

Simple form	V-ing form
I mustn't mush you mustn't mush he mustn't mush we mustn't mush you mustn't mush they mustn't mush	I mustn't be mushing you mustn't be mushing he mustn't be mushing we mustn't be mushing you mustn't be mushing they mustn't be mushing
Perfect	V-ing perfect
I mustn't have mushed you mustn't have mushed he mustn't have mushed we mustn't have mushed you mustn't have mushed they mustn't have mushed	I mustn't have been mushing you mustn't have been mushing he mustn't have been mushing we mustn't have been mushing you mustn't have been mushing they mustn't have been mushing

Interrogative form

Simple form	V-ing form
must I mush? must you mush? must he mush? must we mush? must you mush? must they mush?	must I be mushing? must you be mushing? must he be mushing? must we be mushing? must you be mushing? must they be mushing?
Perfect	V-ing perfect
must I have mushed? must you have mushed? must he have mushed? must we have mushed? must you have mushed? must they have mushed?	must I have been mushing? must you have been mushing? must he have been mushing? must we have been mushing? must you have been mushing? must they have been mushing?

Interro-negative form

Simple form	V-ing form
mustn't I mush? mustn't you mush? mustn't he mush? mustn't we mush? mustn't you mush? mustn't they mush?	mustn't I be mushing? mustn't you be mushing? mustn't he be mushing? mustn't we be mushing? mustn't you be mushing? mustn't they be mushing?
Perfect	V-ing perfect
mustn't I have mushed? mustn't you have mushed? mustn't he have mushed? mustn't we have mushed? mustn't you have mushed? mustn't they have mushed?	mustn't I have been mushing? mustn't you have been mushing? mustn't he have been mushing? mustn't we have been mushing? mustn't you have been mushing? mustn't they have been mushing?