should combine
Verbo regular: combine - combined- combined

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should combine
you should combine
she should combine
we should combine
you should combine
they should combine 	I should be combining
you should be combining
she should be combining
we should be combining
you should be combining
they should be combining	I should have combined
you should have combined
she should have combined
we should have combined
you should have combined
they should have combined	I should have been combining
you should have been combining
she should have been combining
we should have been combining
you should have been combining
they should have been combining	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not combine
you should not combine
she should not combine
we should not combine
you should not combine
they should not combine 	I should not be combining
you should not be combining
she should not be combining
we should not be combining
you should not be combining
they should not be combining	I should not have combined
you should not have combined
she should not have combined
we should not have combined
you should not have combined
they should not have combined	I should not have been combining
you should not have been combining
she should not have been combining
we should not have been combining
you should not have been combining
they should not have been combining	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I combine?
should you combine?
should she combine?
should we combine?
should you combine?
should they combine? 	should I be combining?
should you be combining?
should she be combining?
should we be combining?
should you be combining?
should they be combining? 	should I have combined?
should you have combined?
should she have combined?
should we have combined?
should you have combined?
should they have combined? 	should I have been combining?
should you have been combining?
should she have been combining?
should we have been combining?
should you have been combining?
should they have been combining? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not combine?
should you not combine?
should she not combine?
should we not combine?
should you not combine?
should they not combine? 	should I not be combining?
should you not be combining?
should she not be combining?
should we not be combining?
should you not be combining?
should they not be combining? 	should I not have combined?
should you not have combined?
should she not have combined?
should we not have combined?
should you not have combined?
should they not have combined? 	should I not have been combining?
should you not have been combining?
should she not have been combining?
should we not have been combining?
should you not have been combining?
should they not have been combining?