I could erect you could erect he could erect we could erect you could erect they could erect
Forma com V-ing
I could be erecting you could be erecting he could be erecting we could be erecting you could be erecting they could be erecting
Perfeito
I could have erected you could have erected he could have erected we could have erected you could have erected they could have erected
Perfeito com V-ing
I could have been erecting you could have been erecting he could have been erecting we could have been erecting you could have been erecting they could have been erecting
Negação
Forma simple
I couldn't erect you couldn't erect he couldn't erect we couldn't erect you couldn't erect they couldn't erect
Forma com V-ing
I couldn't be erecting you couldn't be erecting he couldn't be erecting we couldn't be erecting you couldn't be erecting they couldn't be erecting
Perfeito
I couldn't have erected you couldn't have erected he couldn't have erected we couldn't have erected you couldn't have erected they couldn't have erected
Perfeito com V-ing
I couldn't have been erecting you couldn't have been erecting he couldn't have been erecting we couldn't have been erecting you couldn't have been erecting they couldn't have been erecting
Forma interrogativa
Forma simple
could I erect? could you erect? could he erect? could we erect? could you erect? could they erect?
Forma com V-ing
could I be erecting? could you be erecting? could he be erecting? could we be erecting? could you be erecting? could they be erecting?
Perfeito
could I have erected? could you have erected? could he have erected? could we have erected? could you have erected? could they have erected?
Perfeito com V-ing
could I have been erecting? could you have been erecting? could he have been erecting? could we have been erecting? could you have been erecting? could they have been erecting?
Forma interro-Negação
Forma simple
couldn't I erect? couldn't you erect? couldn't he erect? couldn't we erect? couldn't you erect? couldn't they erect?
Forma com V-ing
couldn't I be erecting? couldn't you be erecting? couldn't he be erecting? couldn't we be erecting? couldn't you be erecting? couldn't they be erecting?
Perfeito
couldn't I have erected? couldn't you have erected? couldn't he have erected? couldn't we have erected? couldn't you have erected? couldn't they have erected?
Perfeito com V-ing
couldn't I have been erecting? couldn't you have been erecting? couldn't he have been erecting? couldn't we have been erecting? couldn't you have been erecting? couldn't they have been erecting?