I could document you could document she could document we could document you could document they could document
Forma com V-ing
I could be documenting you could be documenting she could be documenting we could be documenting you could be documenting they could be documenting
Perfeito
I could have documented you could have documented she could have documented we could have documented you could have documented they could have documented
Perfeito com V-ing
I could have been documenting you could have been documenting she could have been documenting we could have been documenting you could have been documenting they could have been documenting
Negação
Forma simple
I could not document you could not document she could not document we could not document you could not document they could not document
Forma com V-ing
I could not be documenting you could not be documenting she could not be documenting we could not be documenting you could not be documenting they could not be documenting
Perfeito
I could not have documented you could not have documented she could not have documented we could not have documented you could not have documented they could not have documented
Perfeito com V-ing
I could not have been documenting you could not have been documenting she could not have been documenting we could not have been documenting you could not have been documenting they could not have been documenting
Forma interrogativa
Forma simple
could I document? could you document? could she document? could we document? could you document? could they document?
Forma com V-ing
could I be documenting? could you be documenting? could she be documenting? could we be documenting? could you be documenting? could they be documenting?
Perfeito
could I have documented? could you have documented? could she have documented? could we have documented? could you have documented? could they have documented?
Perfeito com V-ing
could I have been documenting? could you have been documenting? could she have been documenting? could we have been documenting? could you have been documenting? could they have been documenting?
Forma interro-Negação
Forma simple
could I not document? could you not document? could she not document? could we not document? could you not document? could they not document?
Forma com V-ing
could I not be documenting? could you not be documenting? could she not be documenting? could we not be documenting? could you not be documenting? could they not be documenting?
Perfeito
could I not have documented? could you not have documented? could she not have documented? could we not have documented? could you not have documented? could they not have documented?
Perfeito com V-ing
could I not have been documenting? could you not have been documenting? could she not have been documenting? could we not have been documenting? could you not have been documenting? could they not have been documenting?