should extract
Verbo regular: extract - extracted- extracted

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should extract
you should extract
she should extract
we should extract
you should extract
they should extract 	I should be extracting
you should be extracting
she should be extracting
we should be extracting
you should be extracting
they should be extracting	I should have extracted
you should have extracted
she should have extracted
we should have extracted
you should have extracted
they should have extracted	I should have been extracting
you should have been extracting
she should have been extracting
we should have been extracting
you should have been extracting
they should have been extracting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not extract
you should not extract
she should not extract
we should not extract
you should not extract
they should not extract 	I should not be extracting
you should not be extracting
she should not be extracting
we should not be extracting
you should not be extracting
they should not be extracting	I should not have extracted
you should not have extracted
she should not have extracted
we should not have extracted
you should not have extracted
they should not have extracted	I should not have been extracting
you should not have been extracting
she should not have been extracting
we should not have been extracting
you should not have been extracting
they should not have been extracting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I extract?
should you extract?
should she extract?
should we extract?
should you extract?
should they extract? 	should I be extracting?
should you be extracting?
should she be extracting?
should we be extracting?
should you be extracting?
should they be extracting? 	should I have extracted?
should you have extracted?
should she have extracted?
should we have extracted?
should you have extracted?
should they have extracted? 	should I have been extracting?
should you have been extracting?
should she have been extracting?
should we have been extracting?
should you have been extracting?
should they have been extracting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not extract?
should you not extract?
should she not extract?
should we not extract?
should you not extract?
should they not extract? 	should I not be extracting?
should you not be extracting?
should she not be extracting?
should we not be extracting?
should you not be extracting?
should they not be extracting? 	should I not have extracted?
should you not have extracted?
should she not have extracted?
should we not have extracted?
should you not have extracted?
should they not have extracted? 	should I not have been extracting?
should you not have been extracting?
should she not have been extracting?
should we not have been extracting?
should you not have been extracting?
should they not have been extracting?