I can coproduce you can coproduce he can coproduce we can coproduce you can coproduce they can coproduce
V-ing form
I can be coproducing you can be coproducing he can be coproducing we can be coproducing you can be coproducing they can be coproducing
Perfect
I can have coproduced you can have coproduced he can have coproduced we can have coproduced you can have coproduced they can have coproduced
V-ing perfect
I can have been coproducing you can have been coproducing he can have been coproducing we can have been coproducing you can have been coproducing they can have been coproducing
Negation
Simple form
I cannot coproduce you cannot coproduce he cannot coproduce we cannot coproduce you cannot coproduce they cannot coproduce
V-ing form
I cannot be coproducing you cannot be coproducing he cannot be coproducing we cannot be coproducing you cannot be coproducing they cannot be coproducing
Perfect
I cannot have coproduced you cannot have coproduced he cannot have coproduced we cannot have coproduced you cannot have coproduced they cannot have coproduced
V-ing perfect
I cannot have been coproducing you cannot have been coproducing he cannot have been coproducing we cannot have been coproducing you cannot have been coproducing they cannot have been coproducing
Interrogative form
Simple form
can I coproduce? can you coproduce? can he coproduce? can we coproduce? can you coproduce? can they coproduce?
V-ing form
can I be coproducing? can you be coproducing? can he be coproducing? can we be coproducing? can you be coproducing? can they be coproducing?
Perfect
can I have coproduced? can you have coproduced? can he have coproduced? can we have coproduced? can you have coproduced? can they have coproduced?
V-ing perfect
can I have been coproducing? can you have been coproducing? can he have been coproducing? can we have been coproducing? can you have been coproducing? can they have been coproducing?
Interro-negative form
Simple form
can I not coproduce? can you not coproduce? can he not coproduce? can we not coproduce? can you not coproduce? can they not coproduce?
V-ing form
can I not be coproducing? can you not be coproducing? can he not be coproducing? can we not be coproducing? can you not be coproducing? can they not be coproducing?
Perfect
can I not have coproduced? can you not have coproduced? can he not have coproduced? can we not have coproduced? can you not have coproduced? can they not have coproduced?
V-ing perfect
can I not have been coproducing? can you not have been coproducing? can he not have been coproducing? can we not have been coproducing? can you not have been coproducing? can they not have been coproducing?