English verb conjugation
MUST MUSH

Regular verb: mush - mushed - mushed

Affirmation

Simple form	V-ing form
I must mush you must mush she must mush we must mush you must mush they must mush	I must be mushing you must be mushing she 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 she 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 she 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 she 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 she 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 she 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 she 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 she mush? must we mush? must you mush? must they mush?	must I be mushing? must you be mushing? must she 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 she 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 she 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 she 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 she 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 she 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 she not have been mushing? must we not have been mushing? must you not have been mushing? must they not have been mushing?