I could crouch you could crouch she could crouch we could crouch you could crouch they could crouch
Forme en V-ing
I could be crouching you could be crouching she could be crouching we could be crouching you could be crouching they could be crouching
Perfect
I could have crouched you could have crouched she could have crouched we could have crouched you could have crouched they could have crouched
Perfect en V-ing
I could have been crouching you could have been crouching she could have been crouching we could have been crouching you could have been crouching they could have been crouching
Négation
Forme simple
I could not crouch you could not crouch she could not crouch we could not crouch you could not crouch they could not crouch
Forme en V-ing
I could not be crouching you could not be crouching she could not be crouching we could not be crouching you could not be crouching they could not be crouching
Perfect
I could not have crouched you could not have crouched she could not have crouched we could not have crouched you could not have crouched they could not have crouched
Perfect en V-ing
I could not have been crouching you could not have been crouching she could not have been crouching we could not have been crouching you could not have been crouching they could not have been crouching
Forme interrogative
Forme simple
could I crouch? could you crouch? could she crouch? could we crouch? could you crouch? could they crouch?
Forme en V-ing
could I be crouching? could you be crouching? could she be crouching? could we be crouching? could you be crouching? could they be crouching?
Perfect
could I have crouched? could you have crouched? could she have crouched? could we have crouched? could you have crouched? could they have crouched?
Perfect en V-ing
could I have been crouching? could you have been crouching? could she have been crouching? could we have been crouching? could you have been crouching? could they have been crouching?
Forme interro-négative
Forme simple
could I not crouch? could you not crouch? could she not crouch? could we not crouch? could you not crouch? could they not crouch?
Forme en V-ing
could I not be crouching? could you not be crouching? could she not be crouching? could we not be crouching? could you not be crouching? could they not be crouching?
Perfect
could I not have crouched? could you not have crouched? could she not have crouched? could we not have crouched? could you not have crouched? could they not have crouched?
Perfect en V-ing
could I not have been crouching? could you not have been crouching? could she not have been crouching? could we not have been crouching? could you not have been crouching? could they not have been crouching?