I could erase you could erase she could erase we could erase you could erase they could erase
Forma com V-ing
I could be erasing you could be erasing she could be erasing we could be erasing you could be erasing they could be erasing
Perfeito
I could have erased you could have erased she could have erased we could have erased you could have erased they could have erased
Perfeito com V-ing
I could have been erasing you could have been erasing she could have been erasing we could have been erasing you could have been erasing they could have been erasing
Negação
Forma simple
I could not erase you could not erase she could not erase we could not erase you could not erase they could not erase
Forma com V-ing
I could not be erasing you could not be erasing she could not be erasing we could not be erasing you could not be erasing they could not be erasing
Perfeito
I could not have erased you could not have erased she could not have erased we could not have erased you could not have erased they could not have erased
Perfeito com V-ing
I could not have been erasing you could not have been erasing she could not have been erasing we could not have been erasing you could not have been erasing they could not have been erasing
Forma interrogativa
Forma simple
could I erase? could you erase? could she erase? could we erase? could you erase? could they erase?
Forma com V-ing
could I be erasing? could you be erasing? could she be erasing? could we be erasing? could you be erasing? could they be erasing?
Perfeito
could I have erased? could you have erased? could she have erased? could we have erased? could you have erased? could they have erased?
Perfeito com V-ing
could I have been erasing? could you have been erasing? could she have been erasing? could we have been erasing? could you have been erasing? could they have been erasing?
Forma interro-Negação
Forma simple
could I not erase? could you not erase? could she not erase? could we not erase? could you not erase? could they not erase?
Forma com V-ing
could I not be erasing? could you not be erasing? could she not be erasing? could we not be erasing? could you not be erasing? could they not be erasing?
Perfeito
could I not have erased? could you not have erased? could she not have erased? could we not have erased? could you not have erased? could they not have erased?
Perfeito com V-ing
could I not have been erasing? could you not have been erasing? could she not have been erasing? could we not have been erasing? could you not have been erasing? could they not have been erasing?