should grab
Verbo regular: grab - grabbed- grabbed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should grab
you should grab
she should grab
we should grab
you should grab
they should grab 	I should be grabbing
you should be grabbing
she should be grabbing
we should be grabbing
you should be grabbing
they should be grabbing	I should have grabbed
you should have grabbed
she should have grabbed
we should have grabbed
you should have grabbed
they should have grabbed	I should have been grabbing
you should have been grabbing
she should have been grabbing
we should have been grabbing
you should have been grabbing
they should have been grabbing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not grab
you should not grab
she should not grab
we should not grab
you should not grab
they should not grab 	I should not be grabbing
you should not be grabbing
she should not be grabbing
we should not be grabbing
you should not be grabbing
they should not be grabbing	I should not have grabbed
you should not have grabbed
she should not have grabbed
we should not have grabbed
you should not have grabbed
they should not have grabbed	I should not have been grabbing
you should not have been grabbing
she should not have been grabbing
we should not have been grabbing
you should not have been grabbing
they should not have been grabbing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I grab?
should you grab?
should she grab?
should we grab?
should you grab?
should they grab? 	should I be grabbing?
should you be grabbing?
should she be grabbing?
should we be grabbing?
should you be grabbing?
should they be grabbing? 	should I have grabbed?
should you have grabbed?
should she have grabbed?
should we have grabbed?
should you have grabbed?
should they have grabbed? 	should I have been grabbing?
should you have been grabbing?
should she have been grabbing?
should we have been grabbing?
should you have been grabbing?
should they have been grabbing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not grab?
should you not grab?
should she not grab?
should we not grab?
should you not grab?
should they not grab? 	should I not be grabbing?
should you not be grabbing?
should she not be grabbing?
should we not be grabbing?
should you not be grabbing?
should they not be grabbing? 	should I not have grabbed?
should you not have grabbed?
should she not have grabbed?
should we not have grabbed?
should you not have grabbed?
should they not have grabbed? 	should I not have been grabbing?
should you not have been grabbing?
should she not have been grabbing?
should we not have been grabbing?
should you not have been grabbing?
should they not have been grabbing?