English verb conjugation
COULD BARTER

Regular verb: barter - bartered - bartered

Affirmation

Simple form	V-ing form
I could barter you could barter he could barter we could barter you could barter they could barter	I could be bartering you could be bartering he could be bartering we could be bartering you could be bartering they could be bartering
Perfect	V-ing perfect
I could have bartered you could have bartered he could have bartered we could have bartered you could have bartered they could have bartered	I could have been bartering you could have been bartering he could have been bartering we could have been bartering you could have been bartering they could have been bartering

Negation

Simple form	V-ing form
I could not barter you could not barter he could not barter we could not barter you could not barter they could not barter	I could not be bartering you could not be bartering he could not be bartering we could not be bartering you could not be bartering they could not be bartering
Perfect	V-ing perfect
I could not have bartered you could not have bartered he could not have bartered we could not have bartered you could not have bartered they could not have bartered	I could not have been bartering you could not have been bartering he could not have been bartering we could not have been bartering you could not have been bartering they could not have been bartering

Interrogative form

Simple form	V-ing form
could I barter? could you barter? could he barter? could we barter? could you barter? could they barter?	could I be bartering? could you be bartering? could he be bartering? could we be bartering? could you be bartering? could they be bartering?
Perfect	V-ing perfect
could I have bartered? could you have bartered? could he have bartered? could we have bartered? could you have bartered? could they have bartered?	could I have been bartering? could you have been bartering? could he have been bartering? could we have been bartering? could you have been bartering? could they have been bartering?

Interro-negative form

Simple form	V-ing form
could I not barter? could you not barter? could he not barter? could we not barter? could you not barter? could they not barter?	could I not be bartering? could you not be bartering? could he not be bartering? could we not be bartering? could you not be bartering? could they not be bartering?
Perfect	V-ing perfect
could I not have bartered? could you not have bartered? could he not have bartered? could we not have bartered? could you not have bartered? could they not have bartered?	could I not have been bartering? could you not have been bartering? could he not have been bartering? could we not have been bartering? could you not have been bartering? could they not have been bartering?