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 mustn't pull you mustn't pull she mustn't pull we mustn't pull you mustn't pull they mustn't pull
V-ing form
I mustn't be pulling you mustn't be pulling she mustn't be pulling we mustn't be pulling you mustn't be pulling they mustn't be pulling
Perfect
I mustn't have pulled you mustn't have pulled she mustn't have pulled we mustn't have pulled you mustn't have pulled they mustn't have pulled
V-ing perfect
I mustn't have been pulling you mustn't have been pulling she mustn't have been pulling we mustn't have been pulling you mustn't have been pulling they mustn't 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
mustn't I pull? mustn't you pull? mustn't she pull? mustn't we pull? mustn't you pull? mustn't they pull?
V-ing form
mustn't I be pulling? mustn't you be pulling? mustn't she be pulling? mustn't we be pulling? mustn't you be pulling? mustn't they be pulling?
Perfect
mustn't I have pulled? mustn't you have pulled? mustn't she have pulled? mustn't we have pulled? mustn't you have pulled? mustn't they have pulled?
V-ing perfect
mustn't I have been pulling? mustn't you have been pulling? mustn't she have been pulling? mustn't we have been pulling? mustn't you have been pulling? mustn't they have been pulling?