could aviate
Verbe régulier : aviate - aviated- aviated

Affirmation 	
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I could aviate
you could aviate
she could aviate
we could aviate
you could aviate
they could aviate 	I could be aviating
you could be aviating
she could be aviating
we could be aviating
you could be aviating
they could be aviating	I could have aviated
you could have aviated
she could have aviated
we could have aviated
you could have aviated
they could have aviated	I could have been aviating
you could have been aviating
she could have been aviating
we could have been aviating
you could have been aviating
they could have been aviating	

Négation 	
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I could not aviate
you could not aviate
she could not aviate
we could not aviate
you could not aviate
they could not aviate 	I could not be aviating
you could not be aviating
she could not be aviating
we could not be aviating
you could not be aviating
they could not be aviating	I could not have aviated
you could not have aviated
she could not have aviated
we could not have aviated
you could not have aviated
they could not have aviated	I could not have been aviating
you could not have been aviating
she could not have been aviating
we could not have been aviating
you could not have been aviating
they could not have been aviating	

Forme interrogative 	
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could I aviate?
could you aviate?
could she aviate?
could we aviate?
could you aviate?
could they aviate? 	could I be aviating?
could you be aviating?
could she be aviating?
could we be aviating?
could you be aviating?
could they be aviating? 	could I have aviated?
could you have aviated?
could she have aviated?
could we have aviated?
could you have aviated?
could they have aviated? 	could I have been aviating?
could you have been aviating?
could she have been aviating?
could we have been aviating?
could you have been aviating?
could they have been aviating? 	

Forme interro-négative 	
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could I not aviate?
could you not aviate?
could she not aviate?
could we not aviate?
could you not aviate?
could they not aviate? 	could I not be aviating?
could you not be aviating?
could she not be aviating?
could we not be aviating?
could you not be aviating?
could they not be aviating? 	could I not have aviated?
could you not have aviated?
could she not have aviated?
could we not have aviated?
could you not have aviated?
could they not have aviated? 	could I not have been aviating?
could you not have been aviating?
could she not have been aviating?
could we not have been aviating?
could you not have been aviating?
could they not have been aviating?