I must retract you must retract she must retract we must retract you must retract they must retract
V-ing form
I must be retracting you must be retracting she must be retracting we must be retracting you must be retracting they must be retracting
Perfect
I must have retracted you must have retracted she must have retracted we must have retracted you must have retracted they must have retracted
V-ing perfect
I must have been retracting you must have been retracting she must have been retracting we must have been retracting you must have been retracting they must have been retracting
Negation
Simple form
I mustn't retract you mustn't retract she mustn't retract we mustn't retract you mustn't retract they mustn't retract
V-ing form
I mustn't be retracting you mustn't be retracting she mustn't be retracting we mustn't be retracting you mustn't be retracting they mustn't be retracting
Perfect
I mustn't have retracted you mustn't have retracted she mustn't have retracted we mustn't have retracted you mustn't have retracted they mustn't have retracted
V-ing perfect
I mustn't have been retracting you mustn't have been retracting she mustn't have been retracting we mustn't have been retracting you mustn't have been retracting they mustn't have been retracting
Interrogative form
Simple form
must I retract? must you retract? must she retract? must we retract? must you retract? must they retract?
V-ing form
must I be retracting? must you be retracting? must she be retracting? must we be retracting? must you be retracting? must they be retracting?
Perfect
must I have retracted? must you have retracted? must she have retracted? must we have retracted? must you have retracted? must they have retracted?
V-ing perfect
must I have been retracting? must you have been retracting? must she have been retracting? must we have been retracting? must you have been retracting? must they have been retracting?
Interro-negative form
Simple form
mustn't I retract? mustn't you retract? mustn't she retract? mustn't we retract? mustn't you retract? mustn't they retract?
V-ing form
mustn't I be retracting? mustn't you be retracting? mustn't she be retracting? mustn't we be retracting? mustn't you be retracting? mustn't they be retracting?
Perfect
mustn't I have retracted? mustn't you have retracted? mustn't she have retracted? mustn't we have retracted? mustn't you have retracted? mustn't they have retracted?
V-ing perfect
mustn't I have been retracting? mustn't you have been retracting? mustn't she have been retracting? mustn't we have been retracting? mustn't you have been retracting? mustn't they have been retracting?