I can wall you can wall he can wall we can wall you can wall they can wall
Forma con V-ing
I can be walling you can be walling he can be walling we can be walling you can be walling they can be walling
Perfecto
I can have walled you can have walled he can have walled we can have walled you can have walled they can have walled
Perfecto con V-ing
I can have been walling you can have been walling he can have been walling we can have been walling you can have been walling they can have been walling
Negación
Forma simple
I cannot wall you cannot wall he cannot wall we cannot wall you cannot wall they cannot wall
Forma con V-ing
I cannot be walling you cannot be walling he cannot be walling we cannot be walling you cannot be walling they cannot be walling
Perfecto
I cannot have walled you cannot have walled he cannot have walled we cannot have walled you cannot have walled they cannot have walled
Perfecto con V-ing
I cannot have been walling you cannot have been walling he cannot have been walling we cannot have been walling you cannot have been walling they cannot have been walling
Forma interrogativa
Forma simple
can I wall? can you wall? can he wall? can we wall? can you wall? can they wall?
Forma con V-ing
can I be walling? can you be walling? can he be walling? can we be walling? can you be walling? can they be walling?
Perfecto
can I have walled? can you have walled? can he have walled? can we have walled? can you have walled? can they have walled?
Perfecto con V-ing
can I have been walling? can you have been walling? can he have been walling? can we have been walling? can you have been walling? can they have been walling?
Forma interro-negativa
Forma simple
can I not wall? can you not wall? can he not wall? can we not wall? can you not wall? can they not wall?
Forma con V-ing
can I not be walling? can you not be walling? can he not be walling? can we not be walling? can you not be walling? can they not be walling?
Perfecto
can I not have walled? can you not have walled? can he not have walled? can we not have walled? can you not have walled? can they not have walled?
Perfecto con V-ing
can I not have been walling? can you not have been walling? can he not have been walling? can we not have been walling? can you not have been walling? can they not have been walling?