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 couldn't desist
you couldn't desist
he couldn't desist
we couldn't desist
you couldn't desist
they couldn't desist 	I couldn't be desisting
you couldn't be desisting
he couldn't be desisting
we couldn't be desisting
you couldn't be desisting
they couldn't be desisting	I couldn't have desisted
you couldn't have desisted
he couldn't have desisted
we couldn't have desisted
you couldn't have desisted
they couldn't have desisted	I couldn't have been desisting
you couldn't have been desisting
he couldn't have been desisting
we couldn't have been desisting
you couldn't have been desisting
they couldn't 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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couldn't I desist?
couldn't you desist?
couldn't he desist?
couldn't we desist?
couldn't you desist?
couldn't they desist? 	couldn't I be desisting?
couldn't you be desisting?
couldn't he be desisting?
couldn't we be desisting?
couldn't you be desisting?
couldn't they be desisting? 	couldn't I have desisted?
couldn't you have desisted?
couldn't he have desisted?
couldn't we have desisted?
couldn't you have desisted?
couldn't they have desisted? 	couldn't I have been desisting?
couldn't you have been desisting?
couldn't he have been desisting?
couldn't we have been desisting?
couldn't you have been desisting?
couldn't they have been desisting?