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 mustn't disserve you mustn't disserve he mustn't disserve we mustn't disserve you mustn't disserve they mustn't disserve	I mustn't be disserving you mustn't be disserving he mustn't be disserving we mustn't be disserving you mustn't be disserving they mustn't be disserving
Perfect	V-ing perfect
I mustn't have disserved you mustn't have disserved he mustn't have disserved we mustn't have disserved you mustn't have disserved they mustn't have disserved	I mustn't have been disserving you mustn't have been disserving he mustn't have been disserving we mustn't have been disserving you mustn't have been disserving they mustn't 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
mustn't I disserve? mustn't you disserve? mustn't he disserve? mustn't we disserve? mustn't you disserve? mustn't they disserve?	mustn't I be disserving? mustn't you be disserving? mustn't he be disserving? mustn't we be disserving? mustn't you be disserving? mustn't they be disserving?
Perfect	V-ing perfect
mustn't I have disserved? mustn't you have disserved? mustn't he have disserved? mustn't we have disserved? mustn't you have disserved? mustn't they have disserved?	mustn't I have been disserving? mustn't you have been disserving? mustn't he have been disserving? mustn't we have been disserving? mustn't you have been disserving? mustn't they have been disserving?