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