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 couldn't sharp you couldn't sharp he couldn't sharp we couldn't sharp you couldn't sharp they couldn't sharp	I couldn't be sharping you couldn't be sharping he couldn't be sharping we couldn't be sharping you couldn't be sharping they couldn't be sharping
Perfect	V-ing perfect
I couldn't have sharped you couldn't have sharped he couldn't have sharped we couldn't have sharped you couldn't have sharped they couldn't have sharped	I couldn't have been sharping you couldn't have been sharping he couldn't have been sharping we couldn't have been sharping you couldn't have been sharping they couldn't 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
couldn't I sharp? couldn't you sharp? couldn't he sharp? couldn't we sharp? couldn't you sharp? couldn't they sharp?	couldn't I be sharping? couldn't you be sharping? couldn't he be sharping? couldn't we be sharping? couldn't you be sharping? couldn't they be sharping?
Perfect	V-ing perfect
couldn't I have sharped? couldn't you have sharped? couldn't he have sharped? couldn't we have sharped? couldn't you have sharped? couldn't they have sharped?	couldn't I have been sharping? couldn't you have been sharping? couldn't he have been sharping? couldn't we have been sharping? couldn't you have been sharping? couldn't they have been sharping?