English verb conjugation
MUST LEAVE

Irregular verb: leave - left - left

Affirmation

Simple form	V-ing form
I must leave you must leave he must leave we must leave you must leave they must leave	I must be leaving you must be leaving he must be leaving we must be leaving you must be leaving they must be leaving
Perfect	V-ing perfect
I must have left you must have left he must have left we must have left you must have left they must have left	I must have been leaving you must have been leaving he must have been leaving we must have been leaving you must have been leaving they must have been leaving

Negation

Simple form	V-ing form
I must not leave you must not leave he must not leave we must not leave you must not leave they must not leave	I must not be leaving you must not be leaving he must not be leaving we must not be leaving you must not be leaving they must not be leaving
Perfect	V-ing perfect
I must not have left you must not have left he must not have left we must not have left you must not have left they must not have left	I must not have been leaving you must not have been leaving he must not have been leaving we must not have been leaving you must not have been leaving they must not have been leaving

Interrogative form

Simple form	V-ing form
must I leave? must you leave? must he leave? must we leave? must you leave? must they leave?	must I be leaving? must you be leaving? must he be leaving? must we be leaving? must you be leaving? must they be leaving?
Perfect	V-ing perfect
must I have left? must you have left? must he have left? must we have left? must you have left? must they have left?	must I have been leaving? must you have been leaving? must he have been leaving? must we have been leaving? must you have been leaving? must they have been leaving?

Interro-negative form

Simple form	V-ing form
must I not leave? must you not leave? must he not leave? must we not leave? must you not leave? must they not leave?	must I not be leaving? must you not be leaving? must he not be leaving? must we not be leaving? must you not be leaving? must they not be leaving?
Perfect	V-ing perfect
must I not have left? must you not have left? must he not have left? must we not have left? must you not have left? must they not have left?	must I not have been leaving? must you not have been leaving? must he not have been leaving? must we not have been leaving? must you not have been leaving? must they not have been leaving?