could desist
Regular verb: desist - desisted- desisted

Affirmation 	
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I could desist
you could desist
he could desist
we could desist
you could desist
they could desist 	I could be desisting
you could be desisting
he could be desisting
we could be desisting
you could be desisting
they could be desisting	I could have desisted
you could have desisted
he could have desisted
we could have desisted
you could have desisted
they could have desisted	I could have been desisting
you could have been desisting
he could have been desisting
we could have been desisting
you could have been desisting
they could have been desisting	

Negation 	
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I could not desist
you could not desist
he could not desist
we could not desist
you could not desist
they could not desist 	I could not be desisting
you could not be desisting
he could not be desisting
we could not be desisting
you could not be desisting
they could not be desisting	I could not have desisted
you could not have desisted
he could not have desisted
we could not have desisted
you could not have desisted
they could not have desisted	I could not have been desisting
you could not have been desisting
he could not have been desisting
we could not have been desisting
you could not have been desisting
they could not have been desisting	

Interrogative form 	
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could I desist?
could you desist?
could he desist?
could we desist?
could you desist?
could they desist? 	could I be desisting?
could you be desisting?
could he be desisting?
could we be desisting?
could you be desisting?
could they be desisting? 	could I have desisted?
could you have desisted?
could he have desisted?
could we have desisted?
could you have desisted?
could they have desisted? 	could I have been desisting?
could you have been desisting?
could he have been desisting?
could we have been desisting?
could you have been desisting?
could they have been desisting? 	

Interro-negative form 	
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could I not desist?
could you not desist?
could he not desist?
could we not desist?
could you not desist?
could they not desist? 	could I not be desisting?
could you not be desisting?
could he not be desisting?
could we not be desisting?
could you not be desisting?
could they not be desisting? 	could I not have desisted?
could you not have desisted?
could he not have desisted?
could we not have desisted?
could you not have desisted?
could they not have desisted? 	could I not have been desisting?
could you not have been desisting?
could he not have been desisting?
could we not have been desisting?
could you not have been desisting?
could they not have been desisting?