I can fitter you can fitter he can fitter we can fitter you can fitter they can fitter
Forma con V-ing
I can be fittering you can be fittering he can be fittering we can be fittering you can be fittering they can be fittering
Perfecto
I can have fittered you can have fittered he can have fittered we can have fittered you can have fittered they can have fittered
Perfecto con V-ing
I can have been fittering you can have been fittering he can have been fittering we can have been fittering you can have been fittering they can have been fittering
Negación
Forma simple
I cannot fitter you cannot fitter he cannot fitter we cannot fitter you cannot fitter they cannot fitter
Forma con V-ing
I cannot be fittering you cannot be fittering he cannot be fittering we cannot be fittering you cannot be fittering they cannot be fittering
Perfecto
I cannot have fittered you cannot have fittered he cannot have fittered we cannot have fittered you cannot have fittered they cannot have fittered
Perfecto con V-ing
I cannot have been fittering you cannot have been fittering he cannot have been fittering we cannot have been fittering you cannot have been fittering they cannot have been fittering
Forma interrogativa
Forma simple
can I fitter? can you fitter? can he fitter? can we fitter? can you fitter? can they fitter?
Forma con V-ing
can I be fittering? can you be fittering? can he be fittering? can we be fittering? can you be fittering? can they be fittering?
Perfecto
can I have fittered? can you have fittered? can he have fittered? can we have fittered? can you have fittered? can they have fittered?
Perfecto con V-ing
can I have been fittering? can you have been fittering? can he have been fittering? can we have been fittering? can you have been fittering? can they have been fittering?
Forma interro-negativa
Forma simple
can I not fitter? can you not fitter? can he not fitter? can we not fitter? can you not fitter? can they not fitter?
Forma con V-ing
can I not be fittering? can you not be fittering? can he not be fittering? can we not be fittering? can you not be fittering? can they not be fittering?
Perfecto
can I not have fittered? can you not have fittered? can he not have fittered? can we not have fittered? can you not have fittered? can they not have fittered?
Perfecto con V-ing
can I not have been fittering? can you not have been fittering? can he not have been fittering? can we not have been fittering? can you not have been fittering? can they not have been fittering?