I must pull you must pull she must pull we must pull you must pull they must pull
V-ing form
I must be pulling you must be pulling she must be pulling we must be pulling you must be pulling they must be pulling
Perfect
I must have pulled you must have pulled she must have pulled we must have pulled you must have pulled they must have pulled
V-ing perfect
I must have been pulling you must have been pulling she must have been pulling we must have been pulling you must have been pulling they must have been pulling
Negation
Simple form
I must not pull you must not pull she must not pull we must not pull you must not pull they must not pull
V-ing form
I must not be pulling you must not be pulling she must not be pulling we must not be pulling you must not be pulling they must not be pulling
Perfect
I must not have pulled you must not have pulled she must not have pulled we must not have pulled you must not have pulled they must not have pulled
V-ing perfect
I must not have been pulling you must not have been pulling she must not have been pulling we must not have been pulling you must not have been pulling they must not have been pulling
Interrogative form
Simple form
must I pull? must you pull? must she pull? must we pull? must you pull? must they pull?
V-ing form
must I be pulling? must you be pulling? must she be pulling? must we be pulling? must you be pulling? must they be pulling?
Perfect
must I have pulled? must you have pulled? must she have pulled? must we have pulled? must you have pulled? must they have pulled?
V-ing perfect
must I have been pulling? must you have been pulling? must she have been pulling? must we have been pulling? must you have been pulling? must they have been pulling?
Interro-negative form
Simple form
must I not pull? must you not pull? must she not pull? must we not pull? must you not pull? must they not pull?
V-ing form
must I not be pulling? must you not be pulling? must she not be pulling? must we not be pulling? must you not be pulling? must they not be pulling?
Perfect
must I not have pulled? must you not have pulled? must she not have pulled? must we not have pulled? must you not have pulled? must they not have pulled?
V-ing perfect
must I not have been pulling? must you not have been pulling? must she not have been pulling? must we not have been pulling? must you not have been pulling? must they not have been pulling?