English verb conjugation
MUST DISSERVE

Regular verb: disserve - disserved - disserved

Affirmation

Simple form	V-ing form
I must disserve you must disserve he must disserve we must disserve you must disserve they must disserve	I must be disserving you must be disserving he must be disserving we must be disserving you must be disserving they must be disserving
Perfect	V-ing perfect
I must have disserved you must have disserved he must have disserved we must have disserved you must have disserved they must have disserved	I must have been disserving you must have been disserving he must have been disserving we must have been disserving you must have been disserving they must have been disserving

Negation

Simple form	V-ing form
I must not disserve you must not disserve he must not disserve we must not disserve you must not disserve they must not disserve	I must not be disserving you must not be disserving he must not be disserving we must not be disserving you must not be disserving they must not be disserving
Perfect	V-ing perfect
I must not have disserved you must not have disserved he must not have disserved we must not have disserved you must not have disserved they must not have disserved	I must not have been disserving you must not have been disserving he must not have been disserving we must not have been disserving you must not have been disserving they must not have been disserving

Interrogative form

Simple form	V-ing form
must I disserve? must you disserve? must he disserve? must we disserve? must you disserve? must they disserve?	must I be disserving? must you be disserving? must he be disserving? must we be disserving? must you be disserving? must they be disserving?
Perfect	V-ing perfect
must I have disserved? must you have disserved? must he have disserved? must we have disserved? must you have disserved? must they have disserved?	must I have been disserving? must you have been disserving? must he have been disserving? must we have been disserving? must you have been disserving? must they have been disserving?

Interro-negative form

Simple form	V-ing form
must I not disserve? must you not disserve? must he not disserve? must we not disserve? must you not disserve? must they not disserve?	must I not be disserving? must you not be disserving? must he not be disserving? must we not be disserving? must you not be disserving? must they not be disserving?
Perfect	V-ing perfect
must I not have disserved? must you not have disserved? must he not have disserved? must we not have disserved? must you not have disserved? must they not have disserved?	must I not have been disserving? must you not have been disserving? must he not have been disserving? must we not have been disserving? must you not have been disserving? must they not have been disserving?