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