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 must not mush you must not mush he must not mush we must not mush you must not mush they must not mush	I must not be mushing you must not be mushing he must not be mushing we must not be mushing you must not be mushing they must not be mushing
Perfect	V-ing perfect
I must not have mushed you must not have mushed he must not have mushed we must not have mushed you must not have mushed they must not have mushed	I must not have been mushing you must not have been mushing he must not have been mushing we must not have been mushing you must not have been mushing they must not 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
must I not mush? must you not mush? must he not mush? must we not mush? must you not mush? must they not mush?	must I not be mushing? must you not be mushing? must he not be mushing? must we not be mushing? must you not be mushing? must they not be mushing?
Perfect	V-ing perfect
must I not have mushed? must you not have mushed? must he not have mushed? must we not have mushed? must you not have mushed? must they not have mushed?	must I not have been mushing? must you not have been mushing? must he not have been mushing? must we not have been mushing? must you not have been mushing? must they not have been mushing?