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