could negative
Regular verb: negative - negatived- negatived

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could negative
you could negative
he could negative
we could negative
you could negative
they could negative 	I could be negativing
you could be negativing
he could be negativing
we could be negativing
you could be negativing
they could be negativing	I could have negatived
you could have negatived
he could have negatived
we could have negatived
you could have negatived
they could have negatived	I could have been negativing
you could have been negativing
he could have been negativing
we could have been negativing
you could have been negativing
they could have been negativing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not negative
you could not negative
he could not negative
we could not negative
you could not negative
they could not negative 	I could not be negativing
you could not be negativing
he could not be negativing
we could not be negativing
you could not be negativing
they could not be negativing	I could not have negatived
you could not have negatived
he could not have negatived
we could not have negatived
you could not have negatived
they could not have negatived	I could not have been negativing
you could not have been negativing
he could not have been negativing
we could not have been negativing
you could not have been negativing
they could not have been negativing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I negative?
could you negative?
could he negative?
could we negative?
could you negative?
could they negative? 	could I be negativing?
could you be negativing?
could he be negativing?
could we be negativing?
could you be negativing?
could they be negativing? 	could I have negatived?
could you have negatived?
could he have negatived?
could we have negatived?
could you have negatived?
could they have negatived? 	could I have been negativing?
could you have been negativing?
could he have been negativing?
could we have been negativing?
could you have been negativing?
could they have been negativing? 	

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