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