English verb conjugation
MUST COX

Regular verb: cox - coxed - coxed

Affirmation

Simple form	V-ing form
I must cox you must cox he must cox we must cox you must cox they must cox	I must be coxing you must be coxing he must be coxing we must be coxing you must be coxing they must be coxing
Perfect	V-ing perfect
I must have coxed you must have coxed he must have coxed we must have coxed you must have coxed they must have coxed	I must have been coxing you must have been coxing he must have been coxing we must have been coxing you must have been coxing they must have been coxing

Negation

Simple form	V-ing form
I must not cox you must not cox he must not cox we must not cox you must not cox they must not cox	I must not be coxing you must not be coxing he must not be coxing we must not be coxing you must not be coxing they must not be coxing
Perfect	V-ing perfect
I must not have coxed you must not have coxed he must not have coxed we must not have coxed you must not have coxed they must not have coxed	I must not have been coxing you must not have been coxing he must not have been coxing we must not have been coxing you must not have been coxing they must not have been coxing

Interrogative form

Simple form	V-ing form
must I cox? must you cox? must he cox? must we cox? must you cox? must they cox?	must I be coxing? must you be coxing? must he be coxing? must we be coxing? must you be coxing? must they be coxing?
Perfect	V-ing perfect
must I have coxed? must you have coxed? must he have coxed? must we have coxed? must you have coxed? must they have coxed?	must I have been coxing? must you have been coxing? must he have been coxing? must we have been coxing? must you have been coxing? must they have been coxing?

Interro-negative form

Simple form	V-ing form
must I not cox? must you not cox? must he not cox? must we not cox? must you not cox? must they not cox?	must I not be coxing? must you not be coxing? must he not be coxing? must we not be coxing? must you not be coxing? must they not be coxing?
Perfect	V-ing perfect
must I not have coxed? must you not have coxed? must he not have coxed? must we not have coxed? must you not have coxed? must they not have coxed?	must I not have been coxing? must you not have been coxing? must he not have been coxing? must we not have been coxing? must you not have been coxing? must they not have been coxing?