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