English verb conjugation
COULD DISSERVE

Regular verb: disserve - disserved - disserved

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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