I can flex you can flex he can flex we can flex you can flex they can flex
Forma con V-ing
I can be flexing you can be flexing he can be flexing we can be flexing you can be flexing they can be flexing
Perfecto
I can have flexed you can have flexed he can have flexed we can have flexed you can have flexed they can have flexed
Perfecto con V-ing
I can have been flexing you can have been flexing he can have been flexing we can have been flexing you can have been flexing they can have been flexing
Negación
Forma simple
I can't flex you can't flex he can't flex we can't flex you can't flex they can't flex
Forma con V-ing
I can't be flexing you can't be flexing he can't be flexing we can't be flexing you can't be flexing they can't be flexing
Perfecto
I can't have flexed you can't have flexed he can't have flexed we can't have flexed you can't have flexed they can't have flexed
Perfecto con V-ing
I can't have been flexing you can't have been flexing he can't have been flexing we can't have been flexing you can't have been flexing they can't have been flexing
Forma interrogativa
Forma simple
can I flex? can you flex? can he flex? can we flex? can you flex? can they flex?
Forma con V-ing
can I be flexing? can you be flexing? can he be flexing? can we be flexing? can you be flexing? can they be flexing?
Perfecto
can I have flexed? can you have flexed? can he have flexed? can we have flexed? can you have flexed? can they have flexed?
Perfecto con V-ing
can I have been flexing? can you have been flexing? can he have been flexing? can we have been flexing? can you have been flexing? can they have been flexing?
Forma interro-negativa
Forma simple
can't I flex? can't you flex? can't he flex? can't we flex? can't you flex? can't they flex?
Forma con V-ing
can't I be flexing? can't you be flexing? can't he be flexing? can't we be flexing? can't you be flexing? can't they be flexing?
Perfecto
can't I have flexed? can't you have flexed? can't he have flexed? can't we have flexed? can't you have flexed? can't they have flexed?
Perfecto con V-ing
can't I have been flexing? can't you have been flexing? can't he have been flexing? can't we have been flexing? can't you have been flexing? can't they have been flexing?