English verb conjugation
COULD RETABULATE

Regular verb: retabulate - retabulated - retabulated

Affirmation

Simple form	V-ing form
I could retabulate you could retabulate he could retabulate we could retabulate you could retabulate they could retabulate	I could be retabulating you could be retabulating he could be retabulating we could be retabulating you could be retabulating they could be retabulating
Perfect	V-ing perfect
I could have retabulated you could have retabulated he could have retabulated we could have retabulated you could have retabulated they could have retabulated	I could have been retabulating you could have been retabulating he could have been retabulating we could have been retabulating you could have been retabulating they could have been retabulating

Negation

Simple form	V-ing form
I could not retabulate you could not retabulate he could not retabulate we could not retabulate you could not retabulate they could not retabulate	I could not be retabulating you could not be retabulating he could not be retabulating we could not be retabulating you could not be retabulating they could not be retabulating
Perfect	V-ing perfect
I could not have retabulated you could not have retabulated he could not have retabulated we could not have retabulated you could not have retabulated they could not have retabulated	I could not have been retabulating you could not have been retabulating he could not have been retabulating we could not have been retabulating you could not have been retabulating they could not have been retabulating

Interrogative form

Simple form	V-ing form
could I retabulate? could you retabulate? could he retabulate? could we retabulate? could you retabulate? could they retabulate?	could I be retabulating? could you be retabulating? could he be retabulating? could we be retabulating? could you be retabulating? could they be retabulating?
Perfect	V-ing perfect
could I have retabulated? could you have retabulated? could he have retabulated? could we have retabulated? could you have retabulated? could they have retabulated?	could I have been retabulating? could you have been retabulating? could he have been retabulating? could we have been retabulating? could you have been retabulating? could they have been retabulating?

Interro-negative form

Simple form	V-ing form
could I not retabulate? could you not retabulate? could he not retabulate? could we not retabulate? could you not retabulate? could they not retabulate?	could I not be retabulating? could you not be retabulating? could he not be retabulating? could we not be retabulating? could you not be retabulating? could they not be retabulating?
Perfect	V-ing perfect
could I not have retabulated? could you not have retabulated? could he not have retabulated? could we not have retabulated? could you not have retabulated? could they not have retabulated?	could I not have been retabulating? could you not have been retabulating? could he not have been retabulating? could we not have been retabulating? could you not have been retabulating? could they not have been retabulating?