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