I can grunt you can grunt he can grunt we can grunt you can grunt they can grunt
Forma con V-ing
I can be grunting you can be grunting he can be grunting we can be grunting you can be grunting they can be grunting
Perfecto
I can have grunted you can have grunted he can have grunted we can have grunted you can have grunted they can have grunted
Perfecto con V-ing
I can have been grunting you can have been grunting he can have been grunting we can have been grunting you can have been grunting they can have been grunting
Negación
Forma simple
I can't grunt you can't grunt he can't grunt we can't grunt you can't grunt they can't grunt
Forma con V-ing
I can't be grunting you can't be grunting he can't be grunting we can't be grunting you can't be grunting they can't be grunting
Perfecto
I can't have grunted you can't have grunted he can't have grunted we can't have grunted you can't have grunted they can't have grunted
Perfecto con V-ing
I can't have been grunting you can't have been grunting he can't have been grunting we can't have been grunting you can't have been grunting they can't have been grunting
Forma interrogativa
Forma simple
can I grunt? can you grunt? can he grunt? can we grunt? can you grunt? can they grunt?
Forma con V-ing
can I be grunting? can you be grunting? can he be grunting? can we be grunting? can you be grunting? can they be grunting?
Perfecto
can I have grunted? can you have grunted? can he have grunted? can we have grunted? can you have grunted? can they have grunted?
Perfecto con V-ing
can I have been grunting? can you have been grunting? can he have been grunting? can we have been grunting? can you have been grunting? can they have been grunting?
Forma interro-negativa
Forma simple
can't I grunt? can't you grunt? can't he grunt? can't we grunt? can't you grunt? can't they grunt?
Forma con V-ing
can't I be grunting? can't you be grunting? can't he be grunting? can't we be grunting? can't you be grunting? can't they be grunting?
Perfecto
can't I have grunted? can't you have grunted? can't he have grunted? can't we have grunted? can't you have grunted? can't they have grunted?
Perfecto con V-ing
can't I have been grunting? can't you have been grunting? can't he have been grunting? can't we have been grunting? can't you have been grunting? can't they have been grunting?