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 couldn't barter you couldn't barter he couldn't barter we couldn't barter you couldn't barter they couldn't barter	I couldn't be bartering you couldn't be bartering he couldn't be bartering we couldn't be bartering you couldn't be bartering they couldn't be bartering
Perfect	V-ing perfect
I couldn't have bartered you couldn't have bartered he couldn't have bartered we couldn't have bartered you couldn't have bartered they couldn't have bartered	I couldn't have been bartering you couldn't have been bartering he couldn't have been bartering we couldn't have been bartering you couldn't have been bartering they couldn't 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
couldn't I barter? couldn't you barter? couldn't he barter? couldn't we barter? couldn't you barter? couldn't they barter?	couldn't I be bartering? couldn't you be bartering? couldn't he be bartering? couldn't we be bartering? couldn't you be bartering? couldn't they be bartering?
Perfect	V-ing perfect
couldn't I have bartered? couldn't you have bartered? couldn't he have bartered? couldn't we have bartered? couldn't you have bartered? couldn't they have bartered?	couldn't I have been bartering? couldn't you have been bartering? couldn't he have been bartering? couldn't we have been bartering? couldn't you have been bartering? couldn't they have been bartering?