I can grab you can grab she can grab we can grab you can grab they can grab
Forma con V-ing
I can be grabbing you can be grabbing she can be grabbing we can be grabbing you can be grabbing they can be grabbing
Perfecto
I can have grabbed you can have grabbed she can have grabbed we can have grabbed you can have grabbed they can have grabbed
Perfecto con V-ing
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
I cannot grab you cannot grab she cannot grab we cannot grab you cannot grab they cannot grab
Forma con V-ing
I cannot be grabbing you cannot be grabbing she cannot be grabbing we cannot be grabbing you cannot be grabbing they cannot be grabbing
Perfecto
I cannot have grabbed you cannot have grabbed she cannot have grabbed we cannot have grabbed you cannot have grabbed they cannot have grabbed
Perfecto con V-ing
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
can I grab? can you grab? can she grab? can we grab? can you grab? can they grab?
Forma con V-ing
can I be grabbing? can you be grabbing? can she be grabbing? can we be grabbing? can you be grabbing? can they be grabbing?
Perfecto
can I have grabbed? can you have grabbed? can she have grabbed? can we have grabbed? can you have grabbed? can they have grabbed?
Perfecto con V-ing
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
can I not grab? can you not grab? can she not grab? can we not grab? can you not grab? can they not grab?
Forma con V-ing
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?
Perfecto
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?
Perfecto con V-ing
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?