I must take you must take he must take we must take you must take they must take
V-ing form
I must be taking you must be taking he must be taking we must be taking you must be taking they must be taking
Perfect
I must have taken you must have taken he must have taken we must have taken you must have taken they must have taken
V-ing perfect
I must have been taking you must have been taking he must have been taking we must have been taking you must have been taking they must have been taking
Negation
Simple form
I must not take you must not take he must not take we must not take you must not take they must not take
V-ing form
I must not be taking you must not be taking he must not be taking we must not be taking you must not be taking they must not be taking
Perfect
I must not have taken you must not have taken he must not have taken we must not have taken you must not have taken they must not have taken
V-ing perfect
I must not have been taking you must not have been taking he must not have been taking we must not have been taking you must not have been taking they must not have been taking
Interrogative form
Simple form
must I take? must you take? must he take? must we take? must you take? must they take?
V-ing form
must I be taking? must you be taking? must he be taking? must we be taking? must you be taking? must they be taking?
Perfect
must I have taken? must you have taken? must he have taken? must we have taken? must you have taken? must they have taken?
V-ing perfect
must I have been taking? must you have been taking? must he have been taking? must we have been taking? must you have been taking? must they have been taking?
Interro-negative form
Simple form
must I not take? must you not take? must he not take? must we not take? must you not take? must they not take?
V-ing form
must I not be taking? must you not be taking? must he not be taking? must we not be taking? must you not be taking? must they not be taking?
Perfect
must I not have taken? must you not have taken? must he not have taken? must we not have taken? must you not have taken? must they not have taken?
V-ing perfect
must I not have been taking? must you not have been taking? must he not have been taking? must we not have been taking? must you not have been taking? must they not have been taking?