I can flutter you can flutter he can flutter we can flutter you can flutter they can flutter
Forma con V-ing
I can be fluttering you can be fluttering he can be fluttering we can be fluttering you can be fluttering they can be fluttering
Perfecto
I can have fluttered you can have fluttered he can have fluttered we can have fluttered you can have fluttered they can have fluttered
Perfecto con V-ing
I can have been fluttering you can have been fluttering he can have been fluttering we can have been fluttering you can have been fluttering they can have been fluttering
Negación
Forma simple
I cannot flutter you cannot flutter he cannot flutter we cannot flutter you cannot flutter they cannot flutter
Forma con V-ing
I cannot be fluttering you cannot be fluttering he cannot be fluttering we cannot be fluttering you cannot be fluttering they cannot be fluttering
Perfecto
I cannot have fluttered you cannot have fluttered he cannot have fluttered we cannot have fluttered you cannot have fluttered they cannot have fluttered
Perfecto con V-ing
I cannot have been fluttering you cannot have been fluttering he cannot have been fluttering we cannot have been fluttering you cannot have been fluttering they cannot have been fluttering
Forma interrogativa
Forma simple
can I flutter? can you flutter? can he flutter? can we flutter? can you flutter? can they flutter?
Forma con V-ing
can I be fluttering? can you be fluttering? can he be fluttering? can we be fluttering? can you be fluttering? can they be fluttering?
Perfecto
can I have fluttered? can you have fluttered? can he have fluttered? can we have fluttered? can you have fluttered? can they have fluttered?
Perfecto con V-ing
can I have been fluttering? can you have been fluttering? can he have been fluttering? can we have been fluttering? can you have been fluttering? can they have been fluttering?
Forma interro-negativa
Forma simple
can I not flutter? can you not flutter? can he not flutter? can we not flutter? can you not flutter? can they not flutter?
Forma con V-ing
can I not be fluttering? can you not be fluttering? can he not be fluttering? can we not be fluttering? can you not be fluttering? can they not be fluttering?
Perfecto
can I not have fluttered? can you not have fluttered? can he not have fluttered? can we not have fluttered? can you not have fluttered? can they not have fluttered?
Perfecto con V-ing
can I not have been fluttering? can you not have been fluttering? can he not have been fluttering? can we not have been fluttering? can you not have been fluttering? can they not have been fluttering?