could double-date
Regular verb: double-date - double-dated- double-dated

Affirmation 	
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I could double-date
you could double-date
she could double-date
we could double-date
you could double-date
they could double-date 	I could be double-dating
you could be double-dating
she could be double-dating
we could be double-dating
you could be double-dating
they could be double-dating	I could have double-dated
you could have double-dated
she could have double-dated
we could have double-dated
you could have double-dated
they could have double-dated	I could have been double-dating
you could have been double-dating
she could have been double-dating
we could have been double-dating
you could have been double-dating
they could have been double-dating	

Negation 	
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I could not double-date
you could not double-date
she could not double-date
we could not double-date
you could not double-date
they could not double-date 	I could not be double-dating
you could not be double-dating
she could not be double-dating
we could not be double-dating
you could not be double-dating
they could not be double-dating	I could not have double-dated
you could not have double-dated
she could not have double-dated
we could not have double-dated
you could not have double-dated
they could not have double-dated	I could not have been double-dating
you could not have been double-dating
she could not have been double-dating
we could not have been double-dating
you could not have been double-dating
they could not have been double-dating	

Interrogative form 	
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could I double-date?
could you double-date?
could she double-date?
could we double-date?
could you double-date?
could they double-date? 	could I be double-dating?
could you be double-dating?
could she be double-dating?
could we be double-dating?
could you be double-dating?
could they be double-dating? 	could I have double-dated?
could you have double-dated?
could she have double-dated?
could we have double-dated?
could you have double-dated?
could they have double-dated? 	could I have been double-dating?
could you have been double-dating?
could she have been double-dating?
could we have been double-dating?
could you have been double-dating?
could they have been double-dating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not double-date?
could you not double-date?
could she not double-date?
could we not double-date?
could you not double-date?
could they not double-date? 	could I not be double-dating?
could you not be double-dating?
could she not be double-dating?
could we not be double-dating?
could you not be double-dating?
could they not be double-dating? 	could I not have double-dated?
could you not have double-dated?
could she not have double-dated?
could we not have double-dated?
could you not have double-dated?
could they not have double-dated? 	could I not have been double-dating?
could you not have been double-dating?
could she not have been double-dating?
could we not have been double-dating?
could you not have been double-dating?
could they not have been double-dating?