English verb conjugation
COULD OVERPRODUCE

Regular verb: overproduce - overproduced - overproduced

Affirmation

Simple form	V-ing form
I could overproduce you could overproduce he could overproduce we could overproduce you could overproduce they could overproduce	I could be overproducing you could be overproducing he could be overproducing we could be overproducing you could be overproducing they could be overproducing
Perfect	V-ing perfect
I could have overproduced you could have overproduced he could have overproduced we could have overproduced you could have overproduced they could have overproduced	I could have been overproducing you could have been overproducing he could have been overproducing we could have been overproducing you could have been overproducing they could have been overproducing

Negation

Simple form	V-ing form
I couldn't overproduce you couldn't overproduce he couldn't overproduce we couldn't overproduce you couldn't overproduce they couldn't overproduce	I couldn't be overproducing you couldn't be overproducing he couldn't be overproducing we couldn't be overproducing you couldn't be overproducing they couldn't be overproducing
Perfect	V-ing perfect
I couldn't have overproduced you couldn't have overproduced he couldn't have overproduced we couldn't have overproduced you couldn't have overproduced they couldn't have overproduced	I couldn't have been overproducing you couldn't have been overproducing he couldn't have been overproducing we couldn't have been overproducing you couldn't have been overproducing they couldn't have been overproducing

Interrogative form

Simple form	V-ing form
could I overproduce? could you overproduce? could he overproduce? could we overproduce? could you overproduce? could they overproduce?	could I be overproducing? could you be overproducing? could he be overproducing? could we be overproducing? could you be overproducing? could they be overproducing?
Perfect	V-ing perfect
could I have overproduced? could you have overproduced? could he have overproduced? could we have overproduced? could you have overproduced? could they have overproduced?	could I have been overproducing? could you have been overproducing? could he have been overproducing? could we have been overproducing? could you have been overproducing? could they have been overproducing?

Interro-negative form

Simple form	V-ing form
couldn't I overproduce? couldn't you overproduce? couldn't he overproduce? couldn't we overproduce? couldn't you overproduce? couldn't they overproduce?	couldn't I be overproducing? couldn't you be overproducing? couldn't he be overproducing? couldn't we be overproducing? couldn't you be overproducing? couldn't they be overproducing?
Perfect	V-ing perfect
couldn't I have overproduced? couldn't you have overproduced? couldn't he have overproduced? couldn't we have overproduced? couldn't you have overproduced? couldn't they have overproduced?	couldn't I have been overproducing? couldn't you have been overproducing? couldn't he have been overproducing? couldn't we have been overproducing? couldn't you have been overproducing? couldn't they have been overproducing?