could manufacture
Verbo regular: manufacture - manufactured- manufactured

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could manufacture
you could manufacture
she could manufacture
we could manufacture
you could manufacture
they could manufacture 	I could be manufacturing
you could be manufacturing
she could be manufacturing
we could be manufacturing
you could be manufacturing
they could be manufacturing	I could have manufactured
you could have manufactured
she 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
she could have been manufacturing
we could have been manufacturing
you could have been manufacturing
they could have been manufacturing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't manufacture
you couldn't manufacture
she couldn't manufacture
we couldn't manufacture
you couldn't manufacture
they couldn't manufacture 	I couldn't be manufacturing
you couldn't be manufacturing
she couldn't be manufacturing
we couldn't be manufacturing
you couldn't be manufacturing
they couldn't be manufacturing	I couldn't have manufactured
you couldn't have manufactured
she couldn't have manufactured
we couldn't have manufactured
you couldn't have manufactured
they couldn't have manufactured	I couldn't have been manufacturing
you couldn't have been manufacturing
she couldn't have been manufacturing
we couldn't have been manufacturing
you couldn't have been manufacturing
they couldn't have been manufacturing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I manufacture?
could you manufacture?
could she manufacture?
could we manufacture?
could you manufacture?
could they manufacture? 	could I be manufacturing?
could you be manufacturing?
could she be manufacturing?
could we be manufacturing?
could you be manufacturing?
could they be manufacturing? 	could I have manufactured?
could you have manufactured?
could she 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 she have been manufacturing?
could we have been manufacturing?
could you have been manufacturing?
could they have been manufacturing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I manufacture?
couldn't you manufacture?
couldn't she manufacture?
couldn't we manufacture?
couldn't you manufacture?
couldn't they manufacture? 	couldn't I be manufacturing?
couldn't you be manufacturing?
couldn't she be manufacturing?
couldn't we be manufacturing?
couldn't you be manufacturing?
couldn't they be manufacturing? 	couldn't I have manufactured?
couldn't you have manufactured?
couldn't she have manufactured?
couldn't we have manufactured?
couldn't you have manufactured?
couldn't they have manufactured? 	couldn't I have been manufacturing?
couldn't you have been manufacturing?
couldn't she have been manufacturing?
couldn't we have been manufacturing?
couldn't you have been manufacturing?
couldn't they have been manufacturing?