English verb conjugation
COULD DREDGE

Regular verb: dredge - dredged - dredged

Affirmation

Simple form	V-ing form
I could dredge you could dredge he could dredge we could dredge you could dredge they could dredge	I could be dredging you could be dredging he could be dredging we could be dredging you could be dredging they could be dredging
Perfect	V-ing perfect
I could have dredged you could have dredged he could have dredged we could have dredged you could have dredged they could have dredged	I could have been dredging you could have been dredging he could have been dredging we could have been dredging you could have been dredging they could have been dredging

Negation

Simple form	V-ing form
I could not dredge you could not dredge he could not dredge we could not dredge you could not dredge they could not dredge	I could not be dredging you could not be dredging he could not be dredging we could not be dredging you could not be dredging they could not be dredging
Perfect	V-ing perfect
I could not have dredged you could not have dredged he could not have dredged we could not have dredged you could not have dredged they could not have dredged	I could not have been dredging you could not have been dredging he could not have been dredging we could not have been dredging you could not have been dredging they could not have been dredging

Interrogative form

Simple form	V-ing form
could I dredge? could you dredge? could he dredge? could we dredge? could you dredge? could they dredge?	could I be dredging? could you be dredging? could he be dredging? could we be dredging? could you be dredging? could they be dredging?
Perfect	V-ing perfect
could I have dredged? could you have dredged? could he have dredged? could we have dredged? could you have dredged? could they have dredged?	could I have been dredging? could you have been dredging? could he have been dredging? could we have been dredging? could you have been dredging? could they have been dredging?

Interro-negative form

Simple form	V-ing form
could I not dredge? could you not dredge? could he not dredge? could we not dredge? could you not dredge? could they not dredge?	could I not be dredging? could you not be dredging? could he not be dredging? could we not be dredging? could you not be dredging? could they not be dredging?
Perfect	V-ing perfect
could I not have dredged? could you not have dredged? could he not have dredged? could we not have dredged? could you not have dredged? could they not have dredged?	could I not have been dredging? could you not have been dredging? could he not have been dredging? could we not have been dredging? could you not have been dredging? could they not have been dredging?