could appertain
Regular verb: appertain - appertained- appertained

Affirmation 	
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I could appertain
you could appertain
he could appertain
we could appertain
you could appertain
they could appertain 	I could be appertaining
you could be appertaining
he could be appertaining
we could be appertaining
you could be appertaining
they could be appertaining	I could have appertained
you could have appertained
he could have appertained
we could have appertained
you could have appertained
they could have appertained	I could have been appertaining
you could have been appertaining
he could have been appertaining
we could have been appertaining
you could have been appertaining
they could have been appertaining	

Negation 	
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I could not appertain
you could not appertain
he could not appertain
we could not appertain
you could not appertain
they could not appertain 	I could not be appertaining
you could not be appertaining
he could not be appertaining
we could not be appertaining
you could not be appertaining
they could not be appertaining	I could not have appertained
you could not have appertained
he could not have appertained
we could not have appertained
you could not have appertained
they could not have appertained	I could not have been appertaining
you could not have been appertaining
he could not have been appertaining
we could not have been appertaining
you could not have been appertaining
they could not have been appertaining	

Interrogative form 	
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could I appertain?
could you appertain?
could he appertain?
could we appertain?
could you appertain?
could they appertain? 	could I be appertaining?
could you be appertaining?
could he be appertaining?
could we be appertaining?
could you be appertaining?
could they be appertaining? 	could I have appertained?
could you have appertained?
could he have appertained?
could we have appertained?
could you have appertained?
could they have appertained? 	could I have been appertaining?
could you have been appertaining?
could he have been appertaining?
could we have been appertaining?
could you have been appertaining?
could they have been appertaining? 	

Interro-negative form 	
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could I not appertain?
could you not appertain?
could he not appertain?
could we not appertain?
could you not appertain?
could they not appertain? 	could I not be appertaining?
could you not be appertaining?
could he not be appertaining?
could we not be appertaining?
could you not be appertaining?
could they not be appertaining? 	could I not have appertained?
could you not have appertained?
could he not have appertained?
could we not have appertained?
could you not have appertained?
could they not have appertained? 	could I not have been appertaining?
could you not have been appertaining?
could he not have been appertaining?
could we not have been appertaining?
could you not have been appertaining?
could they not have been appertaining?