could aggrieve
Regular verb: aggrieve - aggrieved- aggrieved

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

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not aggrieve?
could you not aggrieve?
could she 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 she 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 she 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 she not have been aggrieving?
could we not have been aggrieving?
could you not have been aggrieving?
could they not have been aggrieving?