should preview
Verbo regular: preview - previewed- previewed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should preview
you should preview
she should preview
we should preview
you should preview
they should preview 	I should be previewing
you should be previewing
she should be previewing
we should be previewing
you should be previewing
they should be previewing	I should have previewed
you should have previewed
she should have previewed
we should have previewed
you should have previewed
they should have previewed	I should have been previewing
you should have been previewing
she should have been previewing
we should have been previewing
you should have been previewing
they should have been previewing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not preview
you should not preview
she should not preview
we should not preview
you should not preview
they should not preview 	I should not be previewing
you should not be previewing
she should not be previewing
we should not be previewing
you should not be previewing
they should not be previewing	I should not have previewed
you should not have previewed
she should not have previewed
we should not have previewed
you should not have previewed
they should not have previewed	I should not have been previewing
you should not have been previewing
she should not have been previewing
we should not have been previewing
you should not have been previewing
they should not have been previewing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I preview?
should you preview?
should she preview?
should we preview?
should you preview?
should they preview? 	should I be previewing?
should you be previewing?
should she be previewing?
should we be previewing?
should you be previewing?
should they be previewing? 	should I have previewed?
should you have previewed?
should she have previewed?
should we have previewed?
should you have previewed?
should they have previewed? 	should I have been previewing?
should you have been previewing?
should she have been previewing?
should we have been previewing?
should you have been previewing?
should they have been previewing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not preview?
should you not preview?
should she not preview?
should we not preview?
should you not preview?
should they not preview? 	should I not be previewing?
should you not be previewing?
should she not be previewing?
should we not be previewing?
should you not be previewing?
should they not be previewing? 	should I not have previewed?
should you not have previewed?
should she not have previewed?
should we not have previewed?
should you not have previewed?
should they not have previewed? 	should I not have been previewing?
should you not have been previewing?
should she not have been previewing?
should we not have been previewing?
should you not have been previewing?
should they not have been previewing?