English verb conjugation
MUST ERUCT

Regular verb: eruct - eructed - eructed

Affirmation

Simple form	V-ing form
I must eruct you must eruct he must eruct we must eruct you must eruct they must eruct	I must be eructing you must be eructing he must be eructing we must be eructing you must be eructing they must be eructing
Perfect	V-ing perfect
I must have eructed you must have eructed he must have eructed we must have eructed you must have eructed they must have eructed	I must have been eructing you must have been eructing he must have been eructing we must have been eructing you must have been eructing they must have been eructing

Negation

Simple form	V-ing form
I must not eruct you must not eruct he must not eruct we must not eruct you must not eruct they must not eruct	I must not be eructing you must not be eructing he must not be eructing we must not be eructing you must not be eructing they must not be eructing
Perfect	V-ing perfect
I must not have eructed you must not have eructed he must not have eructed we must not have eructed you must not have eructed they must not have eructed	I must not have been eructing you must not have been eructing he must not have been eructing we must not have been eructing you must not have been eructing they must not have been eructing

Interrogative form

Simple form	V-ing form
must I eruct? must you eruct? must he eruct? must we eruct? must you eruct? must they eruct?	must I be eructing? must you be eructing? must he be eructing? must we be eructing? must you be eructing? must they be eructing?
Perfect	V-ing perfect
must I have eructed? must you have eructed? must he have eructed? must we have eructed? must you have eructed? must they have eructed?	must I have been eructing? must you have been eructing? must he have been eructing? must we have been eructing? must you have been eructing? must they have been eructing?

Interro-negative form

Simple form	V-ing form
must I not eruct? must you not eruct? must he not eruct? must we not eruct? must you not eruct? must they not eruct?	must I not be eructing? must you not be eructing? must he not be eructing? must we not be eructing? must you not be eructing? must they not be eructing?
Perfect	V-ing perfect
must I not have eructed? must you not have eructed? must he not have eructed? must we not have eructed? must you not have eructed? must they not have eructed?	must I not have been eructing? must you not have been eructing? must he not have been eructing? must we not have been eructing? must you not have been eructing? must they not have been eructing?