I can try you can try he can try we can try you can try they can try
Forma con V-ing
I can be trying you can be trying he can be trying we can be trying you can be trying they can be trying
Perfecto
I can have tried you can have tried he can have tried we can have tried you can have tried they can have tried
Perfecto con V-ing
I can have been trying you can have been trying he can have been trying we can have been trying you can have been trying they can have been trying
Negación
Forma simple
I can't try you can't try he can't try we can't try you can't try they can't try
Forma con V-ing
I can't be trying you can't be trying he can't be trying we can't be trying you can't be trying they can't be trying
Perfecto
I can't have tried you can't have tried he can't have tried we can't have tried you can't have tried they can't have tried
Perfecto con V-ing
I can't have been trying you can't have been trying he can't have been trying we can't have been trying you can't have been trying they can't have been trying
Forma interrogativa
Forma simple
can I try? can you try? can he try? can we try? can you try? can they try?
Forma con V-ing
can I be trying? can you be trying? can he be trying? can we be trying? can you be trying? can they be trying?
Perfecto
can I have tried? can you have tried? can he have tried? can we have tried? can you have tried? can they have tried?
Perfecto con V-ing
can I have been trying? can you have been trying? can he have been trying? can we have been trying? can you have been trying? can they have been trying?
Forma interro-negativa
Forma simple
can't I try? can't you try? can't he try? can't we try? can't you try? can't they try?
Forma con V-ing
can't I be trying? can't you be trying? can't he be trying? can't we be trying? can't you be trying? can't they be trying?
Perfecto
can't I have tried? can't you have tried? can't he have tried? can't we have tried? can't you have tried? can't they have tried?
Perfecto con V-ing
can't I have been trying? can't you have been trying? can't he have been trying? can't we have been trying? can't you have been trying? can't they have been trying?