English verb conjugation
COULD ACKNOWLEDGE

Regular verb: acknowledge - acknowledged - acknowledged

Affirmation

Simple form	V-ing form
I could acknowledge you could acknowledge he could acknowledge we could acknowledge you could acknowledge they could acknowledge	I could be acknowledging you could be acknowledging he could be acknowledging we could be acknowledging you could be acknowledging they could be acknowledging
Perfect	V-ing perfect
I could have acknowledged you could have acknowledged he could have acknowledged we could have acknowledged you could have acknowledged they could have acknowledged	I could have been acknowledging you could have been acknowledging he could have been acknowledging we could have been acknowledging you could have been acknowledging they could have been acknowledging

Negation

Simple form	V-ing form
I could not acknowledge you could not acknowledge he could not acknowledge we could not acknowledge you could not acknowledge they could not acknowledge	I could not be acknowledging you could not be acknowledging he could not be acknowledging we could not be acknowledging you could not be acknowledging they could not be acknowledging
Perfect	V-ing perfect
I could not have acknowledged you could not have acknowledged he could not have acknowledged we could not have acknowledged you could not have acknowledged they could not have acknowledged	I could not have been acknowledging you could not have been acknowledging he could not have been acknowledging we could not have been acknowledging you could not have been acknowledging they could not have been acknowledging

Interrogative form

Simple form	V-ing form
could I acknowledge? could you acknowledge? could he acknowledge? could we acknowledge? could you acknowledge? could they acknowledge?	could I be acknowledging? could you be acknowledging? could he be acknowledging? could we be acknowledging? could you be acknowledging? could they be acknowledging?
Perfect	V-ing perfect
could I have acknowledged? could you have acknowledged? could he have acknowledged? could we have acknowledged? could you have acknowledged? could they have acknowledged?	could I have been acknowledging? could you have been acknowledging? could he have been acknowledging? could we have been acknowledging? could you have been acknowledging? could they have been acknowledging?

Interro-negative form

Simple form	V-ing form
could I not acknowledge? could you not acknowledge? could he not acknowledge? could we not acknowledge? could you not acknowledge? could they not acknowledge?	could I not be acknowledging? could you not be acknowledging? could he not be acknowledging? could we not be acknowledging? could you not be acknowledging? could they not be acknowledging?
Perfect	V-ing perfect
could I not have acknowledged? could you not have acknowledged? could he not have acknowledged? could we not have acknowledged? could you not have acknowledged? could they not have acknowledged?	could I not have been acknowledging? could you not have been acknowledging? could he not have been acknowledging? could we not have been acknowledging? could you not have been acknowledging? could they not have been acknowledging?