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