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