I must coproduce you must coproduce he must coproduce we must coproduce you must coproduce they must coproduce
V-ing form
I must be coproducing you must be coproducing he must be coproducing we must be coproducing you must be coproducing they must be coproducing
Perfect
I must have coproduced you must have coproduced he must have coproduced we must have coproduced you must have coproduced they must have coproduced
V-ing perfect
I must have been coproducing you must have been coproducing he must have been coproducing we must have been coproducing you must have been coproducing they must have been coproducing
Negation
Simple form
I mustn't coproduce you mustn't coproduce he mustn't coproduce we mustn't coproduce you mustn't coproduce they mustn't coproduce
V-ing form
I mustn't be coproducing you mustn't be coproducing he mustn't be coproducing we mustn't be coproducing you mustn't be coproducing they mustn't be coproducing
Perfect
I mustn't have coproduced you mustn't have coproduced he mustn't have coproduced we mustn't have coproduced you mustn't have coproduced they mustn't have coproduced
V-ing perfect
I mustn't have been coproducing you mustn't have been coproducing he mustn't have been coproducing we mustn't have been coproducing you mustn't have been coproducing they mustn't have been coproducing
Interrogative form
Simple form
must I coproduce? must you coproduce? must he coproduce? must we coproduce? must you coproduce? must they coproduce?
V-ing form
must I be coproducing? must you be coproducing? must he be coproducing? must we be coproducing? must you be coproducing? must they be coproducing?
Perfect
must I have coproduced? must you have coproduced? must he have coproduced? must we have coproduced? must you have coproduced? must they have coproduced?
V-ing perfect
must I have been coproducing? must you have been coproducing? must he have been coproducing? must we have been coproducing? must you have been coproducing? must they have been coproducing?
Interro-negative form
Simple form
mustn't I coproduce? mustn't you coproduce? mustn't he coproduce? mustn't we coproduce? mustn't you coproduce? mustn't they coproduce?
V-ing form
mustn't I be coproducing? mustn't you be coproducing? mustn't he be coproducing? mustn't we be coproducing? mustn't you be coproducing? mustn't they be coproducing?
Perfect
mustn't I have coproduced? mustn't you have coproduced? mustn't he have coproduced? mustn't we have coproduced? mustn't you have coproduced? mustn't they have coproduced?
V-ing perfect
mustn't I have been coproducing? mustn't you have been coproducing? mustn't he have been coproducing? mustn't we have been coproducing? mustn't you have been coproducing? mustn't they have been coproducing?