I can witter you can witter he can witter we can witter you can witter they can witter
Forma con V-ing
I can be wittering you can be wittering he can be wittering we can be wittering you can be wittering they can be wittering
Perfecto
I can have wittered you can have wittered he can have wittered we can have wittered you can have wittered they can have wittered
Perfecto con V-ing
I can have been wittering you can have been wittering he can have been wittering we can have been wittering you can have been wittering they can have been wittering
Negación
Forma simple
I can't witter you can't witter he can't witter we can't witter you can't witter they can't witter
Forma con V-ing
I can't be wittering you can't be wittering he can't be wittering we can't be wittering you can't be wittering they can't be wittering
Perfecto
I can't have wittered you can't have wittered he can't have wittered we can't have wittered you can't have wittered they can't have wittered
Perfecto con V-ing
I can't have been wittering you can't have been wittering he can't have been wittering we can't have been wittering you can't have been wittering they can't have been wittering
Forma interrogativa
Forma simple
can I witter? can you witter? can he witter? can we witter? can you witter? can they witter?
Forma con V-ing
can I be wittering? can you be wittering? can he be wittering? can we be wittering? can you be wittering? can they be wittering?
Perfecto
can I have wittered? can you have wittered? can he have wittered? can we have wittered? can you have wittered? can they have wittered?
Perfecto con V-ing
can I have been wittering? can you have been wittering? can he have been wittering? can we have been wittering? can you have been wittering? can they have been wittering?
Forma interro-negativa
Forma simple
can't I witter? can't you witter? can't he witter? can't we witter? can't you witter? can't they witter?
Forma con V-ing
can't I be wittering? can't you be wittering? can't he be wittering? can't we be wittering? can't you be wittering? can't they be wittering?
Perfecto
can't I have wittered? can't you have wittered? can't he have wittered? can't we have wittered? can't you have wittered? can't they have wittered?
Perfecto con V-ing
can't I have been wittering? can't you have been wittering? can't he have been wittering? can't we have been wittering? can't you have been wittering? can't they have been wittering?