could aggrieve
Regular verb: aggrieve - aggrieved- aggrieved

Affirmation 	
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I could aggrieve
you could aggrieve
he could aggrieve
we could aggrieve
you could aggrieve
they could aggrieve 	I could be aggrieving
you could be aggrieving
he could be aggrieving
we could be aggrieving
you could be aggrieving
they could be aggrieving	I could have aggrieved
you could have aggrieved
he could have aggrieved
we could have aggrieved
you could have aggrieved
they could have aggrieved	I could have been aggrieving
you could have been aggrieving
he could have been aggrieving
we could have been aggrieving
you could have been aggrieving
they could have been aggrieving	

Negation 	
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I could not aggrieve
you could not aggrieve
he could not aggrieve
we could not aggrieve
you could not aggrieve
they could not aggrieve 	I could not be aggrieving
you could not be aggrieving
he could not be aggrieving
we could not be aggrieving
you could not be aggrieving
they could not be aggrieving	I could not have aggrieved
you could not have aggrieved
he could not have aggrieved
we could not have aggrieved
you could not have aggrieved
they could not have aggrieved	I could not have been aggrieving
you could not have been aggrieving
he could not have been aggrieving
we could not have been aggrieving
you could not have been aggrieving
they could not have been aggrieving	

Interrogative form 	
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could I aggrieve?
could you aggrieve?
could he aggrieve?
could we aggrieve?
could you aggrieve?
could they aggrieve? 	could I be aggrieving?
could you be aggrieving?
could he be aggrieving?
could we be aggrieving?
could you be aggrieving?
could they be aggrieving? 	could I have aggrieved?
could you have aggrieved?
could he have aggrieved?
could we have aggrieved?
could you have aggrieved?
could they have aggrieved? 	could I have been aggrieving?
could you have been aggrieving?
could he have been aggrieving?
could we have been aggrieving?
could you have been aggrieving?
could they have been aggrieving? 	

Interro-negative form 	
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could I not aggrieve?
could you not aggrieve?
could he not aggrieve?
could we not aggrieve?
could you not aggrieve?
could they not aggrieve? 	could I not be aggrieving?
could you not be aggrieving?
could he not be aggrieving?
could we not be aggrieving?
could you not be aggrieving?
could they not be aggrieving? 	could I not have aggrieved?
could you not have aggrieved?
could he not have aggrieved?
could we not have aggrieved?
could you not have aggrieved?
could they not have aggrieved? 	could I not have been aggrieving?
could you not have been aggrieving?
could he not have been aggrieving?
could we not have been aggrieving?
could you not have been aggrieving?
could they not have been aggrieving?