could overproportion
Regular verb: overproportion - overproportioned- overproportioned

Affirmation 	
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I could overproportion
you could overproportion
he could overproportion
we could overproportion
you could overproportion
they could overproportion 	I could be overproportioning
you could be overproportioning
he could be overproportioning
we could be overproportioning
you could be overproportioning
they could be overproportioning	I could have overproportioned
you could have overproportioned
he could have overproportioned
we could have overproportioned
you could have overproportioned
they could have overproportioned	I could have been overproportioning
you could have been overproportioning
he could have been overproportioning
we could have been overproportioning
you could have been overproportioning
they could have been overproportioning	

Negation 	
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I could not overproportion
you could not overproportion
he could not overproportion
we could not overproportion
you could not overproportion
they could not overproportion 	I could not be overproportioning
you could not be overproportioning
he could not be overproportioning
we could not be overproportioning
you could not be overproportioning
they could not be overproportioning	I could not have overproportioned
you could not have overproportioned
he could not have overproportioned
we could not have overproportioned
you could not have overproportioned
they could not have overproportioned	I could not have been overproportioning
you could not have been overproportioning
he could not have been overproportioning
we could not have been overproportioning
you could not have been overproportioning
they could not have been overproportioning	

Interrogative form 	
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could I overproportion?
could you overproportion?
could he overproportion?
could we overproportion?
could you overproportion?
could they overproportion? 	could I be overproportioning?
could you be overproportioning?
could he be overproportioning?
could we be overproportioning?
could you be overproportioning?
could they be overproportioning? 	could I have overproportioned?
could you have overproportioned?
could he have overproportioned?
could we have overproportioned?
could you have overproportioned?
could they have overproportioned? 	could I have been overproportioning?
could you have been overproportioning?
could he have been overproportioning?
could we have been overproportioning?
could you have been overproportioning?
could they have been overproportioning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not overproportion?
could you not overproportion?
could he not overproportion?
could we not overproportion?
could you not overproportion?
could they not overproportion? 	could I not be overproportioning?
could you not be overproportioning?
could he not be overproportioning?
could we not be overproportioning?
could you not be overproportioning?
could they not be overproportioning? 	could I not have overproportioned?
could you not have overproportioned?
could he not have overproportioned?
could we not have overproportioned?
could you not have overproportioned?
could they not have overproportioned? 	could I not have been overproportioning?
could you not have been overproportioning?
could he not have been overproportioning?
could we not have been overproportioning?
could you not have been overproportioning?
could they not have been overproportioning?