English verb conjugation
COULD VENT

Regular verb: vent - vented - vented

Affirmation

Simple form	V-ing form
I could vent you could vent he could vent we could vent you could vent they could vent	I could be venting you could be venting he could be venting we could be venting you could be venting they could be venting
Perfect	V-ing perfect
I could have vented you could have vented he could have vented we could have vented you could have vented they could have vented	I could have been venting you could have been venting he could have been venting we could have been venting you could have been venting they could have been venting

Negation

Simple form	V-ing form
I could not vent you could not vent he could not vent we could not vent you could not vent they could not vent	I could not be venting you could not be venting he could not be venting we could not be venting you could not be venting they could not be venting
Perfect	V-ing perfect
I could not have vented you could not have vented he could not have vented we could not have vented you could not have vented they could not have vented	I could not have been venting you could not have been venting he could not have been venting we could not have been venting you could not have been venting they could not have been venting

Interrogative form

Simple form	V-ing form
could I vent? could you vent? could he vent? could we vent? could you vent? could they vent?	could I be venting? could you be venting? could he be venting? could we be venting? could you be venting? could they be venting?
Perfect	V-ing perfect
could I have vented? could you have vented? could he have vented? could we have vented? could you have vented? could they have vented?	could I have been venting? could you have been venting? could he have been venting? could we have been venting? could you have been venting? could they have been venting?

Interro-negative form

Simple form	V-ing form
could I not vent? could you not vent? could he not vent? could we not vent? could you not vent? could they not vent?	could I not be venting? could you not be venting? could he not be venting? could we not be venting? could you not be venting? could they not be venting?
Perfect	V-ing perfect
could I not have vented? could you not have vented? could he not have vented? could we not have vented? could you not have vented? could they not have vented?	could I not have been venting? could you not have been venting? could he not have been venting? could we not have been venting? could you not have been venting? could they not have been venting?