I could regress you could regress she could regress we could regress you could regress they could regress
Forma com V-ing
I could be regressing you could be regressing she could be regressing we could be regressing you could be regressing they could be regressing
Perfeito
I could have regressed you could have regressed she could have regressed we could have regressed you could have regressed they could have regressed
Perfeito com V-ing
I could have been regressing you could have been regressing she could have been regressing we could have been regressing you could have been regressing they could have been regressing
Negação
Forma simple
I couldn't regress you couldn't regress she couldn't regress we couldn't regress you couldn't regress they couldn't regress
Forma com V-ing
I couldn't be regressing you couldn't be regressing she couldn't be regressing we couldn't be regressing you couldn't be regressing they couldn't be regressing
Perfeito
I couldn't have regressed you couldn't have regressed she couldn't have regressed we couldn't have regressed you couldn't have regressed they couldn't have regressed
Perfeito com V-ing
I couldn't have been regressing you couldn't have been regressing she couldn't have been regressing we couldn't have been regressing you couldn't have been regressing they couldn't have been regressing
Forma interrogativa
Forma simple
could I regress? could you regress? could she regress? could we regress? could you regress? could they regress?
Forma com V-ing
could I be regressing? could you be regressing? could she be regressing? could we be regressing? could you be regressing? could they be regressing?
Perfeito
could I have regressed? could you have regressed? could she have regressed? could we have regressed? could you have regressed? could they have regressed?
Perfeito com V-ing
could I have been regressing? could you have been regressing? could she have been regressing? could we have been regressing? could you have been regressing? could they have been regressing?
Forma interro-Negação
Forma simple
couldn't I regress? couldn't you regress? couldn't she regress? couldn't we regress? couldn't you regress? couldn't they regress?
Forma com V-ing
couldn't I be regressing? couldn't you be regressing? couldn't she be regressing? couldn't we be regressing? couldn't you be regressing? couldn't they be regressing?
Perfeito
couldn't I have regressed? couldn't you have regressed? couldn't she have regressed? couldn't we have regressed? couldn't you have regressed? couldn't they have regressed?
Perfeito com V-ing
couldn't I have been regressing? couldn't you have been regressing? couldn't she have been regressing? couldn't we have been regressing? couldn't you have been regressing? couldn't they have been regressing?