Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could coproducer you could coproducer she could coproducer we could coproducer you could coproducer they could coproducer
V-ing form
I could be coproducering you could be coproducering she could be coproducering we could be coproducering you could be coproducering they could be coproducering
Perfect
I could have coproducered you could have coproducered she could have coproducered we could have coproducered you could have coproducered they could have coproducered
V-ing perfect
I could have been coproducering you could have been coproducering she could have been coproducering we could have been coproducering you could have been coproducering they could have been coproducering
Negation
Simple form
I couldn't coproducer you couldn't coproducer she couldn't coproducer we couldn't coproducer you couldn't coproducer they couldn't coproducer
V-ing form
I couldn't be coproducering you couldn't be coproducering she couldn't be coproducering we couldn't be coproducering you couldn't be coproducering they couldn't be coproducering
Perfect
I couldn't have coproducered you couldn't have coproducered she couldn't have coproducered we couldn't have coproducered you couldn't have coproducered they couldn't have coproducered
V-ing perfect
I couldn't have been coproducering you couldn't have been coproducering she couldn't have been coproducering we couldn't have been coproducering you couldn't have been coproducering they couldn't have been coproducering
Interrogative form
Simple form
could I coproducer? could you coproducer? could she coproducer? could we coproducer? could you coproducer? could they coproducer?
V-ing form
could I be coproducering? could you be coproducering? could she be coproducering? could we be coproducering? could you be coproducering? could they be coproducering?
Perfect
could I have coproducered? could you have coproducered? could she have coproducered? could we have coproducered? could you have coproducered? could they have coproducered?
V-ing perfect
could I have been coproducering? could you have been coproducering? could she have been coproducering? could we have been coproducering? could you have been coproducering? could they have been coproducering?
Interro-negative form
Simple form
couldn't I coproducer? couldn't you coproducer? couldn't she coproducer? couldn't we coproducer? couldn't you coproducer? couldn't they coproducer?
V-ing form
couldn't I be coproducering? couldn't you be coproducering? couldn't she be coproducering? couldn't we be coproducering? couldn't you be coproducering? couldn't they be coproducering?
Perfect
couldn't I have coproducered? couldn't you have coproducered? couldn't she have coproducered? couldn't we have coproducered? couldn't you have coproducered? couldn't they have coproducered?
V-ing perfect
couldn't I have been coproducering? couldn't you have been coproducering? couldn't she have been coproducering? couldn't we have been coproducering? couldn't you have been coproducering? couldn't they have been coproducering?