I could comb you could comb she could comb we could comb you could comb they could comb
Forma com V-ing
I could be combing you could be combing she could be combing we could be combing you could be combing they could be combing
Perfeito
I could have combed you could have combed she could have combed we could have combed you could have combed they could have combed
Perfeito com V-ing
I could have been combing you could have been combing she could have been combing we could have been combing you could have been combing they could have been combing
Negação
Forma simple
I could not comb you could not comb she could not comb we could not comb you could not comb they could not comb
Forma com V-ing
I could not be combing you could not be combing she could not be combing we could not be combing you could not be combing they could not be combing
Perfeito
I could not have combed you could not have combed she could not have combed we could not have combed you could not have combed they could not have combed
Perfeito com V-ing
I could not have been combing you could not have been combing she could not have been combing we could not have been combing you could not have been combing they could not have been combing
Forma interrogativa
Forma simple
could I comb? could you comb? could she comb? could we comb? could you comb? could they comb?
Forma com V-ing
could I be combing? could you be combing? could she be combing? could we be combing? could you be combing? could they be combing?
Perfeito
could I have combed? could you have combed? could she have combed? could we have combed? could you have combed? could they have combed?
Perfeito com V-ing
could I have been combing? could you have been combing? could she have been combing? could we have been combing? could you have been combing? could they have been combing?
Forma interro-Negação
Forma simple
could I not comb? could you not comb? could she not comb? could we not comb? could you not comb? could they not comb?
Forma com V-ing
could I not be combing? could you not be combing? could she not be combing? could we not be combing? could you not be combing? could they not be combing?
Perfeito
could I not have combed? could you not have combed? could she not have combed? could we not have combed? could you not have combed? could they not have combed?
Perfeito com V-ing
could I not have been combing? could you not have been combing? could she not have been combing? could we not have been combing? could you not have been combing? could they not have been combing?