I can swear you can swear he can swear we can swear you can swear they can swear
Forma con V-ing
I can be swearing you can be swearing he can be swearing we can be swearing you can be swearing they can be swearing
Perfecto
I can have sworn you can have sworn he can have sworn we can have sworn you can have sworn they can have sworn
Perfecto con V-ing
I can have been swearing you can have been swearing he can have been swearing we can have been swearing you can have been swearing they can have been swearing
Negación
Forma simple
I cannot swear you cannot swear he cannot swear we cannot swear you cannot swear they cannot swear
Forma con V-ing
I cannot be swearing you cannot be swearing he cannot be swearing we cannot be swearing you cannot be swearing they cannot be swearing
Perfecto
I cannot have sworn you cannot have sworn he cannot have sworn we cannot have sworn you cannot have sworn they cannot have sworn
Perfecto con V-ing
I cannot have been swearing you cannot have been swearing he cannot have been swearing we cannot have been swearing you cannot have been swearing they cannot have been swearing
Forma interrogativa
Forma simple
can I swear? can you swear? can he swear? can we swear? can you swear? can they swear?
Forma con V-ing
can I be swearing? can you be swearing? can he be swearing? can we be swearing? can you be swearing? can they be swearing?
Perfecto
can I have sworn? can you have sworn? can he have sworn? can we have sworn? can you have sworn? can they have sworn?
Perfecto con V-ing
can I have been swearing? can you have been swearing? can he have been swearing? can we have been swearing? can you have been swearing? can they have been swearing?
Forma interro-negativa
Forma simple
can I not swear? can you not swear? can he not swear? can we not swear? can you not swear? can they not swear?
Forma con V-ing
can I not be swearing? can you not be swearing? can he not be swearing? can we not be swearing? can you not be swearing? can they not be swearing?
Perfecto
can I not have sworn? can you not have sworn? can he not have sworn? can we not have sworn? can you not have sworn? can they not have sworn?
Perfecto con V-ing
can I not have been swearing? can you not have been swearing? can he not have been swearing? can we not have been swearing? can you not have been swearing? can they not have been swearing?