could overpay
Irregular verb: overpay - overpaid- overpaid

Affirmation 	
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I could overpay
you could overpay
she could overpay
we could overpay
you could overpay
they could overpay 	I could be overpaying
you could be overpaying
she could be overpaying
we could be overpaying
you could be overpaying
they could be overpaying	I could have overpaid
you could have overpaid
she could have overpaid
we could have overpaid
you could have overpaid
they could have overpaid	I could have been overpaying
you could have been overpaying
she could have been overpaying
we could have been overpaying
you could have been overpaying
they could have been overpaying	

Negation 	
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I couldn't overpay
you couldn't overpay
she couldn't overpay
we couldn't overpay
you couldn't overpay
they couldn't overpay 	I couldn't be overpaying
you couldn't be overpaying
she couldn't be overpaying
we couldn't be overpaying
you couldn't be overpaying
they couldn't be overpaying	I couldn't have overpaid
you couldn't have overpaid
she couldn't have overpaid
we couldn't have overpaid
you couldn't have overpaid
they couldn't have overpaid	I couldn't have been overpaying
you couldn't have been overpaying
she couldn't have been overpaying
we couldn't have been overpaying
you couldn't have been overpaying
they couldn't have been overpaying	

Interrogative form 	
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could I overpay?
could you overpay?
could she overpay?
could we overpay?
could you overpay?
could they overpay? 	could I be overpaying?
could you be overpaying?
could she be overpaying?
could we be overpaying?
could you be overpaying?
could they be overpaying? 	could I have overpaid?
could you have overpaid?
could she have overpaid?
could we have overpaid?
could you have overpaid?
could they have overpaid? 	could I have been overpaying?
could you have been overpaying?
could she have been overpaying?
could we have been overpaying?
could you have been overpaying?
could they have been overpaying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I overpay?
couldn't you overpay?
couldn't she overpay?
couldn't we overpay?
couldn't you overpay?
couldn't they overpay? 	couldn't I be overpaying?
couldn't you be overpaying?
couldn't she be overpaying?
couldn't we be overpaying?
couldn't you be overpaying?
couldn't they be overpaying? 	couldn't I have overpaid?
couldn't you have overpaid?
couldn't she have overpaid?
couldn't we have overpaid?
couldn't you have overpaid?
couldn't they have overpaid? 	couldn't I have been overpaying?
couldn't you have been overpaying?
couldn't she have been overpaying?
couldn't we have been overpaying?
couldn't you have been overpaying?
couldn't they have been overpaying?