I could witter you could witter he could witter we could witter you could witter they could witter
Forma com V-ing
I could be wittering you could be wittering he could be wittering we could be wittering you could be wittering they could be wittering
Perfeito
I could have wittered you could have wittered he could have wittered we could have wittered you could have wittered they could have wittered
Perfeito com V-ing
I could have been wittering you could have been wittering he could have been wittering we could have been wittering you could have been wittering they could have been wittering
Negação
Forma simple
I could not witter you could not witter he could not witter we could not witter you could not witter they could not witter
Forma com V-ing
I could not be wittering you could not be wittering he could not be wittering we could not be wittering you could not be wittering they could not be wittering
Perfeito
I could not have wittered you could not have wittered he could not have wittered we could not have wittered you could not have wittered they could not have wittered
Perfeito com V-ing
I could not have been wittering you could not have been wittering he could not have been wittering we could not have been wittering you could not have been wittering they could not have been wittering
Forma interrogativa
Forma simple
could I witter? could you witter? could he witter? could we witter? could you witter? could they witter?
Forma com V-ing
could I be wittering? could you be wittering? could he be wittering? could we be wittering? could you be wittering? could they be wittering?
Perfeito
could I have wittered? could you have wittered? could he have wittered? could we have wittered? could you have wittered? could they have wittered?
Perfeito com V-ing
could I have been wittering? could you have been wittering? could he have been wittering? could we have been wittering? could you have been wittering? could they have been wittering?
Forma interro-Negação
Forma simple
could I not witter? could you not witter? could he not witter? could we not witter? could you not witter? could they not witter?
Forma com V-ing
could I not be wittering? could you not be wittering? could he not be wittering? could we not be wittering? could you not be wittering? could they not be wittering?
Perfeito
could I not have wittered? could you not have wittered? could he not have wittered? could we not have wittered? could you not have wittered? could they not have wittered?
Perfeito com V-ing
could I not have been wittering? could you not have been wittering? could he not have been wittering? could we not have been wittering? could you not have been wittering? could they not have been wittering?