English verb conjugation
COULD RETABULATE

Regular verb: retabulate - retabulated - retabulated

Affirmation

Simple form	V-ing form
I could retabulate you could retabulate she could retabulate we could retabulate you could retabulate they could retabulate	I could be retabulating you could be retabulating she 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 she 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 she 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 couldn't retabulate you couldn't retabulate she couldn't retabulate we couldn't retabulate you couldn't retabulate they couldn't retabulate	I couldn't be retabulating you couldn't be retabulating she couldn't be retabulating we couldn't be retabulating you couldn't be retabulating they couldn't be retabulating
Perfect	V-ing perfect
I couldn't have retabulated you couldn't have retabulated she couldn't have retabulated we couldn't have retabulated you couldn't have retabulated they couldn't have retabulated	I couldn't have been retabulating you couldn't have been retabulating she couldn't have been retabulating we couldn't have been retabulating you couldn't have been retabulating they couldn't have been retabulating

Interrogative form

Simple form	V-ing form
could I retabulate? could you retabulate? could she retabulate? could we retabulate? could you retabulate? could they retabulate?	could I be retabulating? could you be retabulating? could she 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 she 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 she 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
couldn't I retabulate? couldn't you retabulate? couldn't she retabulate? couldn't we retabulate? couldn't you retabulate? couldn't they retabulate?	couldn't I be retabulating? couldn't you be retabulating? couldn't she be retabulating? couldn't we be retabulating? couldn't you be retabulating? couldn't they be retabulating?
Perfect	V-ing perfect
couldn't I have retabulated? couldn't you have retabulated? couldn't she have retabulated? couldn't we have retabulated? couldn't you have retabulated? couldn't they have retabulated?	couldn't I have been retabulating? couldn't you have been retabulating? couldn't she have been retabulating? couldn't we have been retabulating? couldn't you have been retabulating? couldn't they have been retabulating?