can grab
Verbo regular: grab - grabbed- grabbed

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

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

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

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