English verb conjugation
COULD VEND

Regular verb: vend - vended - vended

Affirmation

Simple form	V-ing form
I could vend you could vend he could vend we could vend you could vend they could vend	I could be vending you could be vending he could be vending we could be vending you could be vending they could be vending
Perfect	V-ing perfect
I could have vended you could have vended he could have vended we could have vended you could have vended they could have vended	I could have been vending you could have been vending he could have been vending we could have been vending you could have been vending they could have been vending

Negation

Simple form	V-ing form
I couldn't vend you couldn't vend he couldn't vend we couldn't vend you couldn't vend they couldn't vend	I couldn't be vending you couldn't be vending he couldn't be vending we couldn't be vending you couldn't be vending they couldn't be vending
Perfect	V-ing perfect
I couldn't have vended you couldn't have vended he couldn't have vended we couldn't have vended you couldn't have vended they couldn't have vended	I couldn't have been vending you couldn't have been vending he couldn't have been vending we couldn't have been vending you couldn't have been vending they couldn't have been vending

Interrogative form

Simple form	V-ing form
could I vend? could you vend? could he vend? could we vend? could you vend? could they vend?	could I be vending? could you be vending? could he be vending? could we be vending? could you be vending? could they be vending?
Perfect	V-ing perfect
could I have vended? could you have vended? could he have vended? could we have vended? could you have vended? could they have vended?	could I have been vending? could you have been vending? could he have been vending? could we have been vending? could you have been vending? could they have been vending?

Interro-negative form

Simple form	V-ing form
couldn't I vend? couldn't you vend? couldn't he vend? couldn't we vend? couldn't you vend? couldn't they vend?	couldn't I be vending? couldn't you be vending? couldn't he be vending? couldn't we be vending? couldn't you be vending? couldn't they be vending?
Perfect	V-ing perfect
couldn't I have vended? couldn't you have vended? couldn't he have vended? couldn't we have vended? couldn't you have vended? couldn't they have vended?	couldn't I have been vending? couldn't you have been vending? couldn't he have been vending? couldn't we have been vending? couldn't you have been vending? couldn't they have been vending?