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 must not retract you must not retract she must not retract we must not retract you must not retract they must not retract
V-ing form
I must not be retracting you must not be retracting she must not be retracting we must not be retracting you must not be retracting they must not be retracting
Perfect
I must not have retracted you must not have retracted she must not have retracted we must not have retracted you must not have retracted they must not have retracted
V-ing perfect
I must not have been retracting you must not have been retracting she must not have been retracting we must not have been retracting you must not have been retracting they must not 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
must I not retract? must you not retract? must she not retract? must we not retract? must you not retract? must they not retract?
V-ing form
must I not be retracting? must you not be retracting? must she not be retracting? must we not be retracting? must you not be retracting? must they not be retracting?
Perfect
must I not have retracted? must you not have retracted? must she not have retracted? must we not have retracted? must you not have retracted? must they not have retracted?
V-ing perfect
must I not have been retracting? must you not have been retracting? must she not have been retracting? must we not have been retracting? must you not have been retracting? must they not have been retracting?