could accuse
Regular verb: accuse - accused- accused

Affirmation 	
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I could accuse
you could accuse
she could accuse
we could accuse
you could accuse
they could accuse 	I could be accusing
you could be accusing
she could be accusing
we could be accusing
you could be accusing
they could be accusing	I could have accused
you could have accused
she could have accused
we could have accused
you could have accused
they could have accused	I could have been accusing
you could have been accusing
she could have been accusing
we could have been accusing
you could have been accusing
they could have been accusing	

Negation 	
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I couldn't accuse
you couldn't accuse
she couldn't accuse
we couldn't accuse
you couldn't accuse
they couldn't accuse 	I couldn't be accusing
you couldn't be accusing
she couldn't be accusing
we couldn't be accusing
you couldn't be accusing
they couldn't be accusing	I couldn't have accused
you couldn't have accused
she couldn't have accused
we couldn't have accused
you couldn't have accused
they couldn't have accused	I couldn't have been accusing
you couldn't have been accusing
she couldn't have been accusing
we couldn't have been accusing
you couldn't have been accusing
they couldn't have been accusing	

Interrogative form 	
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could I accuse?
could you accuse?
could she accuse?
could we accuse?
could you accuse?
could they accuse? 	could I be accusing?
could you be accusing?
could she be accusing?
could we be accusing?
could you be accusing?
could they be accusing? 	could I have accused?
could you have accused?
could she have accused?
could we have accused?
could you have accused?
could they have accused? 	could I have been accusing?
could you have been accusing?
could she have been accusing?
could we have been accusing?
could you have been accusing?
could they have been accusing? 	

Interro-negative form 	
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couldn't I accuse?
couldn't you accuse?
couldn't she accuse?
couldn't we accuse?
couldn't you accuse?
couldn't they accuse? 	couldn't I be accusing?
couldn't you be accusing?
couldn't she be accusing?
couldn't we be accusing?
couldn't you be accusing?
couldn't they be accusing? 	couldn't I have accused?
couldn't you have accused?
couldn't she have accused?
couldn't we have accused?
couldn't you have accused?
couldn't they have accused? 	couldn't I have been accusing?
couldn't you have been accusing?
couldn't she have been accusing?
couldn't we have been accusing?
couldn't you have been accusing?
couldn't they have been accusing?