could aviate
Verbe régulier : aviate - aviated- aviated

Affirmation 	
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I could aviate
you could aviate
he could aviate
we could aviate
you could aviate
they could aviate 	I could be aviating
you could be aviating
he could be aviating
we could be aviating
you could be aviating
they could be aviating	I could have aviated
you could have aviated
he 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
he 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 couldn't aviate
you couldn't aviate
he couldn't aviate
we couldn't aviate
you couldn't aviate
they couldn't aviate 	I couldn't be aviating
you couldn't be aviating
he couldn't be aviating
we couldn't be aviating
you couldn't be aviating
they couldn't be aviating	I couldn't have aviated
you couldn't have aviated
he couldn't have aviated
we couldn't have aviated
you couldn't have aviated
they couldn't have aviated	I couldn't have been aviating
you couldn't have been aviating
he couldn't have been aviating
we couldn't have been aviating
you couldn't have been aviating
they couldn't have been aviating	

Forme interrogative 	
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could I aviate?
could you aviate?
could he aviate?
could we aviate?
could you aviate?
could they aviate? 	could I be aviating?
could you be aviating?
could he be aviating?
could we be aviating?
could you be aviating?
could they be aviating? 	could I have aviated?
could you have aviated?
could he 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 he 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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couldn't I aviate?
couldn't you aviate?
couldn't he aviate?
couldn't we aviate?
couldn't you aviate?
couldn't they aviate? 	couldn't I be aviating?
couldn't you be aviating?
couldn't he be aviating?
couldn't we be aviating?
couldn't you be aviating?
couldn't they be aviating? 	couldn't I have aviated?
couldn't you have aviated?
couldn't he have aviated?
couldn't we have aviated?
couldn't you have aviated?
couldn't they have aviated? 	couldn't I have been aviating?
couldn't you have been aviating?
couldn't he have been aviating?
couldn't we have been aviating?
couldn't you have been aviating?
couldn't they have been aviating?