could barter
Regular verb: barter - bartered- bartered

Affirmation 	
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I could barter
you could barter
she could barter
we could barter
you could barter
they could barter 	I could be bartering
you could be bartering
she could be bartering
we could be bartering
you could be bartering
they could be bartering	I could have bartered
you could have bartered
she 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
she could have been bartering
we could have been bartering
you could have been bartering
they could have been bartering	

Negation 	
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I could not barter
you could not barter
she 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
she could not be bartering
we could not be bartering
you could not be bartering
they could not be bartering	I could not have bartered
you could not have bartered
she 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
she 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 	
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could I barter?
could you barter?
could she barter?
could we barter?
could you barter?
could they barter? 	could I be bartering?
could you be bartering?
could she be bartering?
could we be bartering?
could you be bartering?
could they be bartering? 	could I have bartered?
could you have bartered?
could she 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 she have been bartering?
could we have been bartering?
could you have been bartering?
could they have been bartering? 	

Interro-negative form 	
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could I not barter?
could you not barter?
could she 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 she not be bartering?
could we not be bartering?
could you not be bartering?
could they not be bartering? 	could I not have bartered?
could you not have bartered?
could she 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 she not have been bartering?
could we not have been bartering?
could you not have been bartering?
could they not have been bartering?