could dissever
Regular verb: dissever - dissevered- dissevered

Affirmation 	
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I could dissever
you could dissever
he could dissever
we could dissever
you could dissever
they could dissever 	I could be dissevering
you could be dissevering
he could be dissevering
we could be dissevering
you could be dissevering
they could be dissevering	I could have dissevered
you could have dissevered
he could have dissevered
we could have dissevered
you could have dissevered
they could have dissevered	I could have been dissevering
you could have been dissevering
he could have been dissevering
we could have been dissevering
you could have been dissevering
they could have been dissevering	

Negation 	
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I couldn't dissever
you couldn't dissever
he couldn't dissever
we couldn't dissever
you couldn't dissever
they couldn't dissever 	I couldn't be dissevering
you couldn't be dissevering
he couldn't be dissevering
we couldn't be dissevering
you couldn't be dissevering
they couldn't be dissevering	I couldn't have dissevered
you couldn't have dissevered
he couldn't have dissevered
we couldn't have dissevered
you couldn't have dissevered
they couldn't have dissevered	I couldn't have been dissevering
you couldn't have been dissevering
he couldn't have been dissevering
we couldn't have been dissevering
you couldn't have been dissevering
they couldn't have been dissevering	

Interrogative form 	
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could I dissever?
could you dissever?
could he dissever?
could we dissever?
could you dissever?
could they dissever? 	could I be dissevering?
could you be dissevering?
could he be dissevering?
could we be dissevering?
could you be dissevering?
could they be dissevering? 	could I have dissevered?
could you have dissevered?
could he have dissevered?
could we have dissevered?
could you have dissevered?
could they have dissevered? 	could I have been dissevering?
could you have been dissevering?
could he have been dissevering?
could we have been dissevering?
could you have been dissevering?
could they have been dissevering? 	

Interro-negative form 	
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couldn't I dissever?
couldn't you dissever?
couldn't he dissever?
couldn't we dissever?
couldn't you dissever?
couldn't they dissever? 	couldn't I be dissevering?
couldn't you be dissevering?
couldn't he be dissevering?
couldn't we be dissevering?
couldn't you be dissevering?
couldn't they be dissevering? 	couldn't I have dissevered?
couldn't you have dissevered?
couldn't he have dissevered?
couldn't we have dissevered?
couldn't you have dissevered?
couldn't they have dissevered? 	couldn't I have been dissevering?
couldn't you have been dissevering?
couldn't he have been dissevering?
couldn't we have been dissevering?
couldn't you have been dissevering?
couldn't they have been dissevering?