English verb conjugation
COULD COPRODUCE

Regular verb: coproduce - coproduced - coproduced

Affirmation

Simple form	V-ing form
I could coproduce you could coproduce she could coproduce we could coproduce you could coproduce they could coproduce	I could be coproducing you could be coproducing she could be coproducing we could be coproducing you could be coproducing they could be coproducing
Perfect	V-ing perfect
I could have coproduced you could have coproduced she could have coproduced we could have coproduced you could have coproduced they could have coproduced	I could have been coproducing you could have been coproducing she could have been coproducing we could have been coproducing you could have been coproducing they could have been coproducing

Negation

Simple form	V-ing form
I couldn't coproduce you couldn't coproduce she couldn't coproduce we couldn't coproduce you couldn't coproduce they couldn't coproduce	I couldn't be coproducing you couldn't be coproducing she couldn't be coproducing we couldn't be coproducing you couldn't be coproducing they couldn't be coproducing
Perfect	V-ing perfect
I couldn't have coproduced you couldn't have coproduced she couldn't have coproduced we couldn't have coproduced you couldn't have coproduced they couldn't have coproduced	I couldn't have been coproducing you couldn't have been coproducing she couldn't have been coproducing we couldn't have been coproducing you couldn't have been coproducing they couldn't have been coproducing

Interrogative form

Simple form	V-ing form
could I coproduce? could you coproduce? could she coproduce? could we coproduce? could you coproduce? could they coproduce?	could I be coproducing? could you be coproducing? could she be coproducing? could we be coproducing? could you be coproducing? could they be coproducing?
Perfect	V-ing perfect
could I have coproduced? could you have coproduced? could she have coproduced? could we have coproduced? could you have coproduced? could they have coproduced?	could I have been coproducing? could you have been coproducing? could she have been coproducing? could we have been coproducing? could you have been coproducing? could they have been coproducing?

Interro-negative form

Simple form	V-ing form
couldn't I coproduce? couldn't you coproduce? couldn't she coproduce? couldn't we coproduce? couldn't you coproduce? couldn't they coproduce?	couldn't I be coproducing? couldn't you be coproducing? couldn't she be coproducing? couldn't we be coproducing? couldn't you be coproducing? couldn't they be coproducing?
Perfect	V-ing perfect
couldn't I have coproduced? couldn't you have coproduced? couldn't she have coproduced? couldn't we have coproduced? couldn't you have coproduced? couldn't they have coproduced?	couldn't I have been coproducing? couldn't you have been coproducing? couldn't she have been coproducing? couldn't we have been coproducing? couldn't you have been coproducing? couldn't they have been coproducing?