English verb conjugation
COULD RETAG

Regular verb: retag - retaged - retaged

Affirmation

Simple form	V-ing form
I could retag you could retag he could retag we could retag you could retag they could retag	I could be retaging you could be retaging he could be retaging we could be retaging you could be retaging they could be retaging
Perfect	V-ing perfect
I could have retaged you could have retaged he could have retaged we could have retaged you could have retaged they could have retaged	I could have been retaging you could have been retaging he could have been retaging we could have been retaging you could have been retaging they could have been retaging

Negation

Simple form	V-ing form
I could not retag you could not retag he could not retag we could not retag you could not retag they could not retag	I could not be retaging you could not be retaging he could not be retaging we could not be retaging you could not be retaging they could not be retaging
Perfect	V-ing perfect
I could not have retaged you could not have retaged he could not have retaged we could not have retaged you could not have retaged they could not have retaged	I could not have been retaging you could not have been retaging he could not have been retaging we could not have been retaging you could not have been retaging they could not have been retaging

Interrogative form

Simple form	V-ing form
could I retag? could you retag? could he retag? could we retag? could you retag? could they retag?	could I be retaging? could you be retaging? could he be retaging? could we be retaging? could you be retaging? could they be retaging?
Perfect	V-ing perfect
could I have retaged? could you have retaged? could he have retaged? could we have retaged? could you have retaged? could they have retaged?	could I have been retaging? could you have been retaging? could he have been retaging? could we have been retaging? could you have been retaging? could they have been retaging?

Interro-negative form

Simple form	V-ing form
could I not retag? could you not retag? could he not retag? could we not retag? could you not retag? could they not retag?	could I not be retaging? could you not be retaging? could he not be retaging? could we not be retaging? could you not be retaging? could they not be retaging?
Perfect	V-ing perfect
could I not have retaged? could you not have retaged? could he not have retaged? could we not have retaged? could you not have retaged? could they not have retaged?	could I not have been retaging? could you not have been retaging? could he not have been retaging? could we not have been retaging? could you not have been retaging? could they not have been retaging?