I could proceed you could proceed he could proceed we could proceed you could proceed they could proceed
Forma con V-ing
I could be proceeding you could be proceeding he could be proceeding we could be proceeding you could be proceeding they could be proceeding
Perfecto
I could have proceeded you could have proceeded he could have proceeded we could have proceeded you could have proceeded they could have proceeded
Perfecto con V-ing
I could have been proceeding you could have been proceeding he could have been proceeding we could have been proceeding you could have been proceeding they could have been proceeding
Negación
Forma simple
I couldn't proceed you couldn't proceed he couldn't proceed we couldn't proceed you couldn't proceed they couldn't proceed
Forma con V-ing
I couldn't be proceeding you couldn't be proceeding he couldn't be proceeding we couldn't be proceeding you couldn't be proceeding they couldn't be proceeding
Perfecto
I couldn't have proceeded you couldn't have proceeded he couldn't have proceeded we couldn't have proceeded you couldn't have proceeded they couldn't have proceeded
Perfecto con V-ing
I couldn't have been proceeding you couldn't have been proceeding he couldn't have been proceeding we couldn't have been proceeding you couldn't have been proceeding they couldn't have been proceeding
Forma interrogativa
Forma simple
could I proceed? could you proceed? could he proceed? could we proceed? could you proceed? could they proceed?
Forma con V-ing
could I be proceeding? could you be proceeding? could he be proceeding? could we be proceeding? could you be proceeding? could they be proceeding?
Perfecto
could I have proceeded? could you have proceeded? could he have proceeded? could we have proceeded? could you have proceeded? could they have proceeded?
Perfecto con V-ing
could I have been proceeding? could you have been proceeding? could he have been proceeding? could we have been proceeding? could you have been proceeding? could they have been proceeding?
Forma interro-negativa
Forma simple
couldn't I proceed? couldn't you proceed? couldn't he proceed? couldn't we proceed? couldn't you proceed? couldn't they proceed?
Forma con V-ing
couldn't I be proceeding? couldn't you be proceeding? couldn't he be proceeding? couldn't we be proceeding? couldn't you be proceeding? couldn't they be proceeding?
Perfecto
couldn't I have proceeded? couldn't you have proceeded? couldn't he have proceeded? couldn't we have proceeded? couldn't you have proceeded? couldn't they have proceeded?
Perfecto con V-ing
couldn't I have been proceeding? couldn't you have been proceeding? couldn't he have been proceeding? couldn't we have been proceeding? couldn't you have been proceeding? couldn't they have been proceeding?