English verb conjugation
COULD MANUFACTURE

Regular verb: manufacture - manufactured - manufactured

Affirmation

Simple form	V-ing form
I could manufacture you could manufacture he could manufacture we could manufacture you could manufacture they could manufacture	I could be manufacturing you could be manufacturing he could be manufacturing we could be manufacturing you could be manufacturing they could be manufacturing
Perfect	V-ing perfect
I could have manufactured you could have manufactured he could have manufactured we could have manufactured you could have manufactured they could have manufactured	I could have been manufacturing you could have been manufacturing he could have been manufacturing we could have been manufacturing you could have been manufacturing they could have been manufacturing

Negation

Simple form	V-ing form
I could not manufacture you could not manufacture he could not manufacture we could not manufacture you could not manufacture they could not manufacture	I could not be manufacturing you could not be manufacturing he could not be manufacturing we could not be manufacturing you could not be manufacturing they could not be manufacturing
Perfect	V-ing perfect
I could not have manufactured you could not have manufactured he could not have manufactured we could not have manufactured you could not have manufactured they could not have manufactured	I could not have been manufacturing you could not have been manufacturing he could not have been manufacturing we could not have been manufacturing you could not have been manufacturing they could not have been manufacturing

Interrogative form

Simple form	V-ing form
could I manufacture? could you manufacture? could he manufacture? could we manufacture? could you manufacture? could they manufacture?	could I be manufacturing? could you be manufacturing? could he be manufacturing? could we be manufacturing? could you be manufacturing? could they be manufacturing?
Perfect	V-ing perfect
could I have manufactured? could you have manufactured? could he have manufactured? could we have manufactured? could you have manufactured? could they have manufactured?	could I have been manufacturing? could you have been manufacturing? could he have been manufacturing? could we have been manufacturing? could you have been manufacturing? could they have been manufacturing?

Interro-negative form

Simple form	V-ing form
could I not manufacture? could you not manufacture? could he not manufacture? could we not manufacture? could you not manufacture? could they not manufacture?	could I not be manufacturing? could you not be manufacturing? could he not be manufacturing? could we not be manufacturing? could you not be manufacturing? could they not be manufacturing?
Perfect	V-ing perfect
could I not have manufactured? could you not have manufactured? could he not have manufactured? could we not have manufactured? could you not have manufactured? could they not have manufactured?	could I not have been manufacturing? could you not have been manufacturing? could he not have been manufacturing? could we not have been manufacturing? could you not have been manufacturing? could they not have been manufacturing?