I could input you could input she could input we could input you could input they could input
Forma con V-ing
I could be inputing you could be inputing she could be inputing we could be inputing you could be inputing they could be inputing
Perfecto
I could have input you could have input she could have input we could have input you could have input they could have input
Perfecto con V-ing
I could have been inputing you could have been inputing she could have been inputing we could have been inputing you could have been inputing they could have been inputing
Negación
Forma simple
I couldn't input you couldn't input she couldn't input we couldn't input you couldn't input they couldn't input
Forma con V-ing
I couldn't be inputing you couldn't be inputing she couldn't be inputing we couldn't be inputing you couldn't be inputing they couldn't be inputing
Perfecto
I couldn't have input you couldn't have input she couldn't have input we couldn't have input you couldn't have input they couldn't have input
Perfecto con V-ing
I couldn't have been inputing you couldn't have been inputing she couldn't have been inputing we couldn't have been inputing you couldn't have been inputing they couldn't have been inputing
Forma interrogativa
Forma simple
could I input? could you input? could she input? could we input? could you input? could they input?
Forma con V-ing
could I be inputing? could you be inputing? could she be inputing? could we be inputing? could you be inputing? could they be inputing?
Perfecto
could I have input? could you have input? could she have input? could we have input? could you have input? could they have input?
Perfecto con V-ing
could I have been inputing? could you have been inputing? could she have been inputing? could we have been inputing? could you have been inputing? could they have been inputing?
Forma interro-negativa
Forma simple
couldn't I input? couldn't you input? couldn't she input? couldn't we input? couldn't you input? couldn't they input?
Forma con V-ing
couldn't I be inputing? couldn't you be inputing? couldn't she be inputing? couldn't we be inputing? couldn't you be inputing? couldn't they be inputing?
Perfecto
couldn't I have input? couldn't you have input? couldn't she have input? couldn't we have input? couldn't you have input? couldn't they have input?
Perfecto con V-ing
couldn't I have been inputing? couldn't you have been inputing? couldn't she have been inputing? couldn't we have been inputing? couldn't you have been inputing? couldn't they have been inputing?