I must coproduce you must coproduce she must coproduce we must coproduce you must coproduce they must coproduce
V-ing form
I must be coproducing you must be coproducing she must be coproducing we must be coproducing you must be coproducing they must be coproducing
Perfect
I must have coproduced you must have coproduced she 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 she 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 she 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 she 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 she 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 she 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 she coproduce? must we coproduce? must you coproduce? must they coproduce?
V-ing form
must I be coproducing? must you be coproducing? must she be coproducing? must we be coproducing? must you be coproducing? must they be coproducing?
Perfect
must I have coproduced? must you have coproduced? must she 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 she 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 she 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 she 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 she 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 she have been coproducing? mustn't we have been coproducing? mustn't you have been coproducing? mustn't they have been coproducing?