could desegregate
Regular verb: desegregate - desegregated- desegregated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could desegregate
you could desegregate
he could desegregate
we could desegregate
you could desegregate
they could desegregate 	I could be desegregating
you could be desegregating
he could be desegregating
we could be desegregating
you could be desegregating
they could be desegregating	I could have desegregated
you could have desegregated
he could have desegregated
we could have desegregated
you could have desegregated
they could have desegregated	I could have been desegregating
you could have been desegregating
he could have been desegregating
we could have been desegregating
you could have been desegregating
they could have been desegregating	

Negation 	
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I couldn't desegregate
you couldn't desegregate
he couldn't desegregate
we couldn't desegregate
you couldn't desegregate
they couldn't desegregate 	I couldn't be desegregating
you couldn't be desegregating
he couldn't be desegregating
we couldn't be desegregating
you couldn't be desegregating
they couldn't be desegregating	I couldn't have desegregated
you couldn't have desegregated
he couldn't have desegregated
we couldn't have desegregated
you couldn't have desegregated
they couldn't have desegregated	I couldn't have been desegregating
you couldn't have been desegregating
he couldn't have been desegregating
we couldn't have been desegregating
you couldn't have been desegregating
they couldn't have been desegregating	

Interrogative form 	
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could I desegregate?
could you desegregate?
could he desegregate?
could we desegregate?
could you desegregate?
could they desegregate? 	could I be desegregating?
could you be desegregating?
could he be desegregating?
could we be desegregating?
could you be desegregating?
could they be desegregating? 	could I have desegregated?
could you have desegregated?
could he have desegregated?
could we have desegregated?
could you have desegregated?
could they have desegregated? 	could I have been desegregating?
could you have been desegregating?
could he have been desegregating?
could we have been desegregating?
could you have been desegregating?
could they have been desegregating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I desegregate?
couldn't you desegregate?
couldn't he desegregate?
couldn't we desegregate?
couldn't you desegregate?
couldn't they desegregate? 	couldn't I be desegregating?
couldn't you be desegregating?
couldn't he be desegregating?
couldn't we be desegregating?
couldn't you be desegregating?
couldn't they be desegregating? 	couldn't I have desegregated?
couldn't you have desegregated?
couldn't he have desegregated?
couldn't we have desegregated?
couldn't you have desegregated?
couldn't they have desegregated? 	couldn't I have been desegregating?
couldn't you have been desegregating?
couldn't he have been desegregating?
couldn't we have been desegregating?
couldn't you have been desegregating?
couldn't they have been desegregating?