could anguish
Regular verb: anguish - anguished- anguished

Affirmation 	
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I could anguish
you could anguish
he could anguish
we could anguish
you could anguish
they could anguish 	I could be anguishing
you could be anguishing
he could be anguishing
we could be anguishing
you could be anguishing
they could be anguishing	I could have anguished
you could have anguished
he could have anguished
we could have anguished
you could have anguished
they could have anguished	I could have been anguishing
you could have been anguishing
he could have been anguishing
we could have been anguishing
you could have been anguishing
they could have been anguishing	

Negation 	
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I couldn't anguish
you couldn't anguish
he couldn't anguish
we couldn't anguish
you couldn't anguish
they couldn't anguish 	I couldn't be anguishing
you couldn't be anguishing
he couldn't be anguishing
we couldn't be anguishing
you couldn't be anguishing
they couldn't be anguishing	I couldn't have anguished
you couldn't have anguished
he couldn't have anguished
we couldn't have anguished
you couldn't have anguished
they couldn't have anguished	I couldn't have been anguishing
you couldn't have been anguishing
he couldn't have been anguishing
we couldn't have been anguishing
you couldn't have been anguishing
they couldn't have been anguishing	

Interrogative form 	
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could I anguish?
could you anguish?
could he anguish?
could we anguish?
could you anguish?
could they anguish? 	could I be anguishing?
could you be anguishing?
could he be anguishing?
could we be anguishing?
could you be anguishing?
could they be anguishing? 	could I have anguished?
could you have anguished?
could he have anguished?
could we have anguished?
could you have anguished?
could they have anguished? 	could I have been anguishing?
could you have been anguishing?
could he have been anguishing?
could we have been anguishing?
could you have been anguishing?
could they have been anguishing? 	

Interro-negative form 	
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couldn't I anguish?
couldn't you anguish?
couldn't he anguish?
couldn't we anguish?
couldn't you anguish?
couldn't they anguish? 	couldn't I be anguishing?
couldn't you be anguishing?
couldn't he be anguishing?
couldn't we be anguishing?
couldn't you be anguishing?
couldn't they be anguishing? 	couldn't I have anguished?
couldn't you have anguished?
couldn't he have anguished?
couldn't we have anguished?
couldn't you have anguished?
couldn't they have anguished? 	couldn't I have been anguishing?
couldn't you have been anguishing?
couldn't he have been anguishing?
couldn't we have been anguishing?
couldn't you have been anguishing?
couldn't they have been anguishing?