English verb conjugation
COULD DEFINE

Regular verb: define - defined - defined

Affirmation

Simple form	V-ing form
I could define you could define he could define we could define you could define they could define	I could be defining you could be defining he could be defining we could be defining you could be defining they could be defining
Perfect	V-ing perfect
I could have defined you could have defined he could have defined we could have defined you could have defined they could have defined	I could have been defining you could have been defining he could have been defining we could have been defining you could have been defining they could have been defining

Negation

Simple form	V-ing form
I could not define you could not define he could not define we could not define you could not define they could not define	I could not be defining you could not be defining he could not be defining we could not be defining you could not be defining they could not be defining
Perfect	V-ing perfect
I could not have defined you could not have defined he could not have defined we could not have defined you could not have defined they could not have defined	I could not have been defining you could not have been defining he could not have been defining we could not have been defining you could not have been defining they could not have been defining

Interrogative form

Simple form	V-ing form
could I define? could you define? could he define? could we define? could you define? could they define?	could I be defining? could you be defining? could he be defining? could we be defining? could you be defining? could they be defining?
Perfect	V-ing perfect
could I have defined? could you have defined? could he have defined? could we have defined? could you have defined? could they have defined?	could I have been defining? could you have been defining? could he have been defining? could we have been defining? could you have been defining? could they have been defining?

Interro-negative form

Simple form	V-ing form
could I not define? could you not define? could he not define? could we not define? could you not define? could they not define?	could I not be defining? could you not be defining? could he not be defining? could we not be defining? could you not be defining? could they not be defining?
Perfect	V-ing perfect
could I not have defined? could you not have defined? could he not have defined? could we not have defined? could you not have defined? could they not have defined?	could I not have been defining? could you not have been defining? could he not have been defining? could we not have been defining? could you not have been defining? could they not have been defining?