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