English verb conjugation
COULD SHARP

Regular verb: sharp - sharped - sharped

Affirmation

Simple form	V-ing form
I could sharp you could sharp he could sharp we could sharp you could sharp they could sharp	I could be sharping you could be sharping he could be sharping we could be sharping you could be sharping they could be sharping
Perfect	V-ing perfect
I could have sharped you could have sharped he could have sharped we could have sharped you could have sharped they could have sharped	I could have been sharping you could have been sharping he could have been sharping we could have been sharping you could have been sharping they could have been sharping

Negation

Simple form	V-ing form
I could not sharp you could not sharp he could not sharp we could not sharp you could not sharp they could not sharp	I could not be sharping you could not be sharping he could not be sharping we could not be sharping you could not be sharping they could not be sharping
Perfect	V-ing perfect
I could not have sharped you could not have sharped he could not have sharped we could not have sharped you could not have sharped they could not have sharped	I could not have been sharping you could not have been sharping he could not have been sharping we could not have been sharping you could not have been sharping they could not have been sharping

Interrogative form

Simple form	V-ing form
could I sharp? could you sharp? could he sharp? could we sharp? could you sharp? could they sharp?	could I be sharping? could you be sharping? could he be sharping? could we be sharping? could you be sharping? could they be sharping?
Perfect	V-ing perfect
could I have sharped? could you have sharped? could he have sharped? could we have sharped? could you have sharped? could they have sharped?	could I have been sharping? could you have been sharping? could he have been sharping? could we have been sharping? could you have been sharping? could they have been sharping?

Interro-negative form

Simple form	V-ing form
could I not sharp? could you not sharp? could he not sharp? could we not sharp? could you not sharp? could they not sharp?	could I not be sharping? could you not be sharping? could he not be sharping? could we not be sharping? could you not be sharping? could they not be sharping?
Perfect	V-ing perfect
could I not have sharped? could you not have sharped? could he not have sharped? could we not have sharped? could you not have sharped? could they not have sharped?	could I not have been sharping? could you not have been sharping? could he not have been sharping? could we not have been sharping? could you not have been sharping? could they not have been sharping?