I can grumble you can grumble he can grumble we can grumble you can grumble they can grumble
Forma con V-ing
I can be grumbling you can be grumbling he can be grumbling we can be grumbling you can be grumbling they can be grumbling
Perfecto
I can have grumbled you can have grumbled he can have grumbled we can have grumbled you can have grumbled they can have grumbled
Perfecto con V-ing
I can have been grumbling you can have been grumbling he can have been grumbling we can have been grumbling you can have been grumbling they can have been grumbling
Negación
Forma simple
I cannot grumble you cannot grumble he cannot grumble we cannot grumble you cannot grumble they cannot grumble
Forma con V-ing
I cannot be grumbling you cannot be grumbling he cannot be grumbling we cannot be grumbling you cannot be grumbling they cannot be grumbling
Perfecto
I cannot have grumbled you cannot have grumbled he cannot have grumbled we cannot have grumbled you cannot have grumbled they cannot have grumbled
Perfecto con V-ing
I cannot have been grumbling you cannot have been grumbling he cannot have been grumbling we cannot have been grumbling you cannot have been grumbling they cannot have been grumbling
Forma interrogativa
Forma simple
can I grumble? can you grumble? can he grumble? can we grumble? can you grumble? can they grumble?
Forma con V-ing
can I be grumbling? can you be grumbling? can he be grumbling? can we be grumbling? can you be grumbling? can they be grumbling?
Perfecto
can I have grumbled? can you have grumbled? can he have grumbled? can we have grumbled? can you have grumbled? can they have grumbled?
Perfecto con V-ing
can I have been grumbling? can you have been grumbling? can he have been grumbling? can we have been grumbling? can you have been grumbling? can they have been grumbling?
Forma interro-negativa
Forma simple
can I not grumble? can you not grumble? can he not grumble? can we not grumble? can you not grumble? can they not grumble?
Forma con V-ing
can I not be grumbling? can you not be grumbling? can he not be grumbling? can we not be grumbling? can you not be grumbling? can they not be grumbling?
Perfecto
can I not have grumbled? can you not have grumbled? can he not have grumbled? can we not have grumbled? can you not have grumbled? can they not have grumbled?
Perfecto con V-ing
can I not have been grumbling? can you not have been grumbling? can he not have been grumbling? can we not have been grumbling? can you not have been grumbling? can they not have been grumbling?