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 couldn't document you couldn't document she couldn't document we couldn't document you couldn't document they couldn't document
Forma com V-ing
I couldn't be documenting you couldn't be documenting she couldn't be documenting we couldn't be documenting you couldn't be documenting they couldn't be documenting
Perfeito
I couldn't have documented you couldn't have documented she couldn't have documented we couldn't have documented you couldn't have documented they couldn't have documented
Perfeito com V-ing
I couldn't have been documenting you couldn't have been documenting she couldn't have been documenting we couldn't have been documenting you couldn't have been documenting they couldn't 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
couldn't I document? couldn't you document? couldn't she document? couldn't we document? couldn't you document? couldn't they document?
Forma com V-ing
couldn't I be documenting? couldn't you be documenting? couldn't she be documenting? couldn't we be documenting? couldn't you be documenting? couldn't they be documenting?
Perfeito
couldn't I have documented? couldn't you have documented? couldn't she have documented? couldn't we have documented? couldn't you have documented? couldn't they have documented?
Perfeito com V-ing
couldn't I have been documenting? couldn't you have been documenting? couldn't she have been documenting? couldn't we have been documenting? couldn't you have been documenting? couldn't they have been documenting?