English verb conjugation
COULD CORBEL

Regular verb: corbel - corbeled - corbeled

Affirmation

Simple form	V-ing form
I could corbel you could corbel he could corbel we could corbel you could corbel they could corbel	I could be corbeling you could be corbeling he could be corbeling we could be corbeling you could be corbeling they could be corbeling
Perfect	V-ing perfect
I could have corbeled you could have corbeled he could have corbeled we could have corbeled you could have corbeled they could have corbeled	I could have been corbeling you could have been corbeling he could have been corbeling we could have been corbeling you could have been corbeling they could have been corbeling

Negation

Simple form	V-ing form
I could not corbel you could not corbel he could not corbel we could not corbel you could not corbel they could not corbel	I could not be corbeling you could not be corbeling he could not be corbeling we could not be corbeling you could not be corbeling they could not be corbeling
Perfect	V-ing perfect
I could not have corbeled you could not have corbeled he could not have corbeled we could not have corbeled you could not have corbeled they could not have corbeled	I could not have been corbeling you could not have been corbeling he could not have been corbeling we could not have been corbeling you could not have been corbeling they could not have been corbeling

Interrogative form

Simple form	V-ing form
could I corbel? could you corbel? could he corbel? could we corbel? could you corbel? could they corbel?	could I be corbeling? could you be corbeling? could he be corbeling? could we be corbeling? could you be corbeling? could they be corbeling?
Perfect	V-ing perfect
could I have corbeled? could you have corbeled? could he have corbeled? could we have corbeled? could you have corbeled? could they have corbeled?	could I have been corbeling? could you have been corbeling? could he have been corbeling? could we have been corbeling? could you have been corbeling? could they have been corbeling?

Interro-negative form

Simple form	V-ing form
could I not corbel? could you not corbel? could he not corbel? could we not corbel? could you not corbel? could they not corbel?	could I not be corbeling? could you not be corbeling? could he not be corbeling? could we not be corbeling? could you not be corbeling? could they not be corbeling?
Perfect	V-ing perfect
could I not have corbeled? could you not have corbeled? could he not have corbeled? could we not have corbeled? could you not have corbeled? could they not have corbeled?	could I not have been corbeling? could you not have been corbeling? could he not have been corbeling? could we not have been corbeling? could you not have been corbeling? could they not have been corbeling?