I could squint you could squint he could squint we could squint you could squint they could squint
Forma com V-ing
I could be squinting you could be squinting he could be squinting we could be squinting you could be squinting they could be squinting
Perfeito
I could have squinted you could have squinted he could have squinted we could have squinted you could have squinted they could have squinted
Perfeito com V-ing
I could have been squinting you could have been squinting he could have been squinting we could have been squinting you could have been squinting they could have been squinting
Negação
Forma simple
I could not squint you could not squint he could not squint we could not squint you could not squint they could not squint
Forma com V-ing
I could not be squinting you could not be squinting he could not be squinting we could not be squinting you could not be squinting they could not be squinting
Perfeito
I could not have squinted you could not have squinted he could not have squinted we could not have squinted you could not have squinted they could not have squinted
Perfeito com V-ing
I could not have been squinting you could not have been squinting he could not have been squinting we could not have been squinting you could not have been squinting they could not have been squinting
Forma interrogativa
Forma simple
could I squint? could you squint? could he squint? could we squint? could you squint? could they squint?
Forma com V-ing
could I be squinting? could you be squinting? could he be squinting? could we be squinting? could you be squinting? could they be squinting?
Perfeito
could I have squinted? could you have squinted? could he have squinted? could we have squinted? could you have squinted? could they have squinted?
Perfeito com V-ing
could I have been squinting? could you have been squinting? could he have been squinting? could we have been squinting? could you have been squinting? could they have been squinting?
Forma interro-Negação
Forma simple
could I not squint? could you not squint? could he not squint? could we not squint? could you not squint? could they not squint?
Forma com V-ing
could I not be squinting? could you not be squinting? could he not be squinting? could we not be squinting? could you not be squinting? could they not be squinting?
Perfeito
could I not have squinted? could you not have squinted? could he not have squinted? could we not have squinted? could you not have squinted? could they not have squinted?
Perfeito com V-ing
could I not have been squinting? could you not have been squinting? could he not have been squinting? could we not have been squinting? could you not have been squinting? could they not have been squinting?