English verb conjugation
COULD WRACK

Regular verb: wrack - wracked - wracked

Affirmation

Simple form	V-ing form
I could wrack you could wrack he could wrack we could wrack you could wrack they could wrack	I could be wracking you could be wracking he could be wracking we could be wracking you could be wracking they could be wracking
Perfect	V-ing perfect
I could have wracked you could have wracked he could have wracked we could have wracked you could have wracked they could have wracked	I could have been wracking you could have been wracking he could have been wracking we could have been wracking you could have been wracking they could have been wracking

Negation

Simple form	V-ing form
I could not wrack you could not wrack he could not wrack we could not wrack you could not wrack they could not wrack	I could not be wracking you could not be wracking he could not be wracking we could not be wracking you could not be wracking they could not be wracking
Perfect	V-ing perfect
I could not have wracked you could not have wracked he could not have wracked we could not have wracked you could not have wracked they could not have wracked	I could not have been wracking you could not have been wracking he could not have been wracking we could not have been wracking you could not have been wracking they could not have been wracking

Interrogative form

Simple form	V-ing form
could I wrack? could you wrack? could he wrack? could we wrack? could you wrack? could they wrack?	could I be wracking? could you be wracking? could he be wracking? could we be wracking? could you be wracking? could they be wracking?
Perfect	V-ing perfect
could I have wracked? could you have wracked? could he have wracked? could we have wracked? could you have wracked? could they have wracked?	could I have been wracking? could you have been wracking? could he have been wracking? could we have been wracking? could you have been wracking? could they have been wracking?

Interro-negative form

Simple form	V-ing form
could I not wrack? could you not wrack? could he not wrack? could we not wrack? could you not wrack? could they not wrack?	could I not be wracking? could you not be wracking? could he not be wracking? could we not be wracking? could you not be wracking? could they not be wracking?
Perfect	V-ing perfect
could I not have wracked? could you not have wracked? could he not have wracked? could we not have wracked? could you not have wracked? could they not have wracked?	could I not have been wracking? could you not have been wracking? could he not have been wracking? could we not have been wracking? could you not have been wracking? could they not have been wracking?