I could obstruct you could obstruct he could obstruct we could obstruct you could obstruct they could obstruct
Forma com V-ing
I could be obstructing you could be obstructing he could be obstructing we could be obstructing you could be obstructing they could be obstructing
Perfeito
I could have obstructed you could have obstructed he could have obstructed we could have obstructed you could have obstructed they could have obstructed
Perfeito com V-ing
I could have been obstructing you could have been obstructing he could have been obstructing we could have been obstructing you could have been obstructing they could have been obstructing
Negação
Forma simple
I couldn't obstruct you couldn't obstruct he couldn't obstruct we couldn't obstruct you couldn't obstruct they couldn't obstruct
Forma com V-ing
I couldn't be obstructing you couldn't be obstructing he couldn't be obstructing we couldn't be obstructing you couldn't be obstructing they couldn't be obstructing
Perfeito
I couldn't have obstructed you couldn't have obstructed he couldn't have obstructed we couldn't have obstructed you couldn't have obstructed they couldn't have obstructed
Perfeito com V-ing
I couldn't have been obstructing you couldn't have been obstructing he couldn't have been obstructing we couldn't have been obstructing you couldn't have been obstructing they couldn't have been obstructing
Forma interrogativa
Forma simple
could I obstruct? could you obstruct? could he obstruct? could we obstruct? could you obstruct? could they obstruct?
Forma com V-ing
could I be obstructing? could you be obstructing? could he be obstructing? could we be obstructing? could you be obstructing? could they be obstructing?
Perfeito
could I have obstructed? could you have obstructed? could he have obstructed? could we have obstructed? could you have obstructed? could they have obstructed?
Perfeito com V-ing
could I have been obstructing? could you have been obstructing? could he have been obstructing? could we have been obstructing? could you have been obstructing? could they have been obstructing?
Forma interro-Negação
Forma simple
couldn't I obstruct? couldn't you obstruct? couldn't he obstruct? couldn't we obstruct? couldn't you obstruct? couldn't they obstruct?
Forma com V-ing
couldn't I be obstructing? couldn't you be obstructing? couldn't he be obstructing? couldn't we be obstructing? couldn't you be obstructing? couldn't they be obstructing?
Perfeito
couldn't I have obstructed? couldn't you have obstructed? couldn't he have obstructed? couldn't we have obstructed? couldn't you have obstructed? couldn't they have obstructed?
Perfeito com V-ing
couldn't I have been obstructing? couldn't you have been obstructing? couldn't he have been obstructing? couldn't we have been obstructing? couldn't you have been obstructing? couldn't they have been obstructing?