English verb conjugation
MUST GROVEL

Regular verb: grovel - grovelled - grovelled

Affirmation

Simple form	V-ing form
I must grovel you must grovel he must grovel we must grovel you must grovel they must grovel	I must be grovelling you must be grovelling he must be grovelling we must be grovelling you must be grovelling they must be grovelling
Perfect	V-ing perfect
I must have grovelled you must have grovelled he must have grovelled we must have grovelled you must have grovelled they must have grovelled	I must have been grovelling you must have been grovelling he must have been grovelling we must have been grovelling you must have been grovelling they must have been grovelling

Negation

Simple form	V-ing form
I must not grovel you must not grovel he must not grovel we must not grovel you must not grovel they must not grovel	I must not be grovelling you must not be grovelling he must not be grovelling we must not be grovelling you must not be grovelling they must not be grovelling
Perfect	V-ing perfect
I must not have grovelled you must not have grovelled he must not have grovelled we must not have grovelled you must not have grovelled they must not have grovelled	I must not have been grovelling you must not have been grovelling he must not have been grovelling we must not have been grovelling you must not have been grovelling they must not have been grovelling

Interrogative form

Simple form	V-ing form
must I grovel? must you grovel? must he grovel? must we grovel? must you grovel? must they grovel?	must I be grovelling? must you be grovelling? must he be grovelling? must we be grovelling? must you be grovelling? must they be grovelling?
Perfect	V-ing perfect
must I have grovelled? must you have grovelled? must he have grovelled? must we have grovelled? must you have grovelled? must they have grovelled?	must I have been grovelling? must you have been grovelling? must he have been grovelling? must we have been grovelling? must you have been grovelling? must they have been grovelling?

Interro-negative form

Simple form	V-ing form
must I not grovel? must you not grovel? must he not grovel? must we not grovel? must you not grovel? must they not grovel?	must I not be grovelling? must you not be grovelling? must he not be grovelling? must we not be grovelling? must you not be grovelling? must they not be grovelling?
Perfect	V-ing perfect
must I not have grovelled? must you not have grovelled? must he not have grovelled? must we not have grovelled? must you not have grovelled? must they not have grovelled?	must I not have been grovelling? must you not have been grovelling? must he not have been grovelling? must we not have been grovelling? must you not have been grovelling? must they not have been grovelling?