English verb conjugation
MUST STOP

Regular verb: stop - stopped - stopped

Affirmation

Simple form	V-ing form
I must stop you must stop she must stop we must stop you must stop they must stop	I must be stopping you must be stopping she must be stopping we must be stopping you must be stopping they must be stopping
Perfect	V-ing perfect
I must have stopped you must have stopped she must have stopped we must have stopped you must have stopped they must have stopped	I must have been stopping you must have been stopping she must have been stopping we must have been stopping you must have been stopping they must have been stopping

Negation

Simple form	V-ing form
I must not stop you must not stop she must not stop we must not stop you must not stop they must not stop	I must not be stopping you must not be stopping she must not be stopping we must not be stopping you must not be stopping they must not be stopping
Perfect	V-ing perfect
I must not have stopped you must not have stopped she must not have stopped we must not have stopped you must not have stopped they must not have stopped	I must not have been stopping you must not have been stopping she must not have been stopping we must not have been stopping you must not have been stopping they must not have been stopping

Interrogative form

Simple form	V-ing form
must I stop? must you stop? must she stop? must we stop? must you stop? must they stop?	must I be stopping? must you be stopping? must she be stopping? must we be stopping? must you be stopping? must they be stopping?
Perfect	V-ing perfect
must I have stopped? must you have stopped? must she have stopped? must we have stopped? must you have stopped? must they have stopped?	must I have been stopping? must you have been stopping? must she have been stopping? must we have been stopping? must you have been stopping? must they have been stopping?

Interro-negative form

Simple form	V-ing form
must I not stop? must you not stop? must she not stop? must we not stop? must you not stop? must they not stop?	must I not be stopping? must you not be stopping? must she not be stopping? must we not be stopping? must you not be stopping? must they not be stopping?
Perfect	V-ing perfect
must I not have stopped? must you not have stopped? must she not have stopped? must we not have stopped? must you not have stopped? must they not have stopped?	must I not have been stopping? must you not have been stopping? must she not have been stopping? must we not have been stopping? must you not have been stopping? must they not have been stopping?