English verb conjugation
CAN BARTER

Regular verb: barter - bartered - bartered

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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