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