I can swear you can swear she can swear we can swear you can swear they can swear
Forma con V-ing
I can be swearing you can be swearing she can be swearing we can be swearing you can be swearing they can be swearing
Perfecto
I can have sworn you can have sworn she 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 she can have been swearing we can have been swearing you can have been swearing they can have been swearing
Negación
Forma simple
I can't swear you can't swear she can't swear we can't swear you can't swear they can't swear
Forma con V-ing
I can't be swearing you can't be swearing she can't be swearing we can't be swearing you can't be swearing they can't be swearing
Perfecto
I can't have sworn you can't have sworn she can't have sworn we can't have sworn you can't have sworn they can't have sworn
Perfecto con V-ing
I can't have been swearing you can't have been swearing she can't have been swearing we can't have been swearing you can't have been swearing they can't have been swearing
Forma interrogativa
Forma simple
can I swear? can you swear? can she swear? can we swear? can you swear? can they swear?
Forma con V-ing
can I be swearing? can you be swearing? can she be swearing? can we be swearing? can you be swearing? can they be swearing?
Perfecto
can I have sworn? can you have sworn? can she 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 she have been swearing? can we have been swearing? can you have been swearing? can they have been swearing?
Forma interro-negativa
Forma simple
can't I swear? can't you swear? can't she swear? can't we swear? can't you swear? can't they swear?
Forma con V-ing
can't I be swearing? can't you be swearing? can't she be swearing? can't we be swearing? can't you be swearing? can't they be swearing?
Perfecto
can't I have sworn? can't you have sworn? can't she have sworn? can't we have sworn? can't you have sworn? can't they have sworn?
Perfecto con V-ing
can't I have been swearing? can't you have been swearing? can't she have been swearing? can't we have been swearing? can't you have been swearing? can't they have been swearing?