English verb conjugation
MUST HOUSEKEEP

Irregular verb: housekeep - housekept - housekept

Affirmation

Simple form	V-ing form
I must housekeep you must housekeep she must housekeep we must housekeep you must housekeep they must housekeep	I must be housekeeping you must be housekeeping she must be housekeeping we must be housekeeping you must be housekeeping they must be housekeeping
Perfect	V-ing perfect
I must have housekept you must have housekept she must have housekept we must have housekept you must have housekept they must have housekept	I must have been housekeeping you must have been housekeeping she must have been housekeeping we must have been housekeeping you must have been housekeeping they must have been housekeeping

Negation

Simple form	V-ing form
I must not housekeep you must not housekeep she must not housekeep we must not housekeep you must not housekeep they must not housekeep	I must not be housekeeping you must not be housekeeping she must not be housekeeping we must not be housekeeping you must not be housekeeping they must not be housekeeping
Perfect	V-ing perfect
I must not have housekept you must not have housekept she must not have housekept we must not have housekept you must not have housekept they must not have housekept	I must not have been housekeeping you must not have been housekeeping she must not have been housekeeping we must not have been housekeeping you must not have been housekeeping they must not have been housekeeping

Interrogative form

Simple form	V-ing form
must I housekeep? must you housekeep? must she housekeep? must we housekeep? must you housekeep? must they housekeep?	must I be housekeeping? must you be housekeeping? must she be housekeeping? must we be housekeeping? must you be housekeeping? must they be housekeeping?
Perfect	V-ing perfect
must I have housekept? must you have housekept? must she have housekept? must we have housekept? must you have housekept? must they have housekept?	must I have been housekeeping? must you have been housekeeping? must she have been housekeeping? must we have been housekeeping? must you have been housekeeping? must they have been housekeeping?

Interro-negative form

Simple form	V-ing form
must I not housekeep? must you not housekeep? must she not housekeep? must we not housekeep? must you not housekeep? must they not housekeep?	must I not be housekeeping? must you not be housekeeping? must she not be housekeeping? must we not be housekeeping? must you not be housekeeping? must they not be housekeeping?
Perfect	V-ing perfect
must I not have housekept? must you not have housekept? must she not have housekept? must we not have housekept? must you not have housekept? must they not have housekept?	must I not have been housekeeping? must you not have been housekeeping? must she not have been housekeeping? must we not have been housekeeping? must you not have been housekeeping? must they not have been housekeeping?