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 couldn't acknowledge you couldn't acknowledge he couldn't acknowledge we couldn't acknowledge you couldn't acknowledge they couldn't acknowledge	I couldn't be acknowledging you couldn't be acknowledging he couldn't be acknowledging we couldn't be acknowledging you couldn't be acknowledging they couldn't be acknowledging
Perfect	V-ing perfect
I couldn't have acknowledged you couldn't have acknowledged he couldn't have acknowledged we couldn't have acknowledged you couldn't have acknowledged they couldn't have acknowledged	I couldn't have been acknowledging you couldn't have been acknowledging he couldn't have been acknowledging we couldn't have been acknowledging you couldn't have been acknowledging they couldn't 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
couldn't I acknowledge? couldn't you acknowledge? couldn't he acknowledge? couldn't we acknowledge? couldn't you acknowledge? couldn't they acknowledge?	couldn't I be acknowledging? couldn't you be acknowledging? couldn't he be acknowledging? couldn't we be acknowledging? couldn't you be acknowledging? couldn't they be acknowledging?
Perfect	V-ing perfect
couldn't I have acknowledged? couldn't you have acknowledged? couldn't he have acknowledged? couldn't we have acknowledged? couldn't you have acknowledged? couldn't they have acknowledged?	couldn't I have been acknowledging? couldn't you have been acknowledging? couldn't he have been acknowledging? couldn't we have been acknowledging? couldn't you have been acknowledging? couldn't they have been acknowledging?