English verb conjugation
MUST RESERVE

Regular verb: reserve - reserved - reserved

Affirmation

Simple form	V-ing form
I must reserve you must reserve he must reserve we must reserve you must reserve they must reserve	I must be reserving you must be reserving he must be reserving we must be reserving you must be reserving they must be reserving
Perfect	V-ing perfect
I must have reserved you must have reserved he must have reserved we must have reserved you must have reserved they must have reserved	I must have been reserving you must have been reserving he must have been reserving we must have been reserving you must have been reserving they must have been reserving

Negation

Simple form	V-ing form
I must not reserve you must not reserve he must not reserve we must not reserve you must not reserve they must not reserve	I must not be reserving you must not be reserving he must not be reserving we must not be reserving you must not be reserving they must not be reserving
Perfect	V-ing perfect
I must not have reserved you must not have reserved he must not have reserved we must not have reserved you must not have reserved they must not have reserved	I must not have been reserving you must not have been reserving he must not have been reserving we must not have been reserving you must not have been reserving they must not have been reserving

Interrogative form

Simple form	V-ing form
must I reserve? must you reserve? must he reserve? must we reserve? must you reserve? must they reserve?	must I be reserving? must you be reserving? must he be reserving? must we be reserving? must you be reserving? must they be reserving?
Perfect	V-ing perfect
must I have reserved? must you have reserved? must he have reserved? must we have reserved? must you have reserved? must they have reserved?	must I have been reserving? must you have been reserving? must he have been reserving? must we have been reserving? must you have been reserving? must they have been reserving?

Interro-negative form

Simple form	V-ing form
must I not reserve? must you not reserve? must he not reserve? must we not reserve? must you not reserve? must they not reserve?	must I not be reserving? must you not be reserving? must he not be reserving? must we not be reserving? must you not be reserving? must they not be reserving?
Perfect	V-ing perfect
must I not have reserved? must you not have reserved? must he not have reserved? must we not have reserved? must you not have reserved? must they not have reserved?	must I not have been reserving? must you not have been reserving? must he not have been reserving? must we not have been reserving? must you not have been reserving? must they not have been reserving?