I can clench you can clench he can clench we can clench you can clench they can clench
Forme en V-ing
I can be clenching you can be clenching he can be clenching we can be clenching you can be clenching they can be clenching
Perfect
I can have clenched you can have clenched he can have clenched we can have clenched you can have clenched they can have clenched
Perfect en V-ing
I can have been clenching you can have been clenching he can have been clenching we can have been clenching you can have been clenching they can have been clenching
Négation
Forme simple
I cannot clench you cannot clench he cannot clench we cannot clench you cannot clench they cannot clench
Forme en V-ing
I cannot be clenching you cannot be clenching he cannot be clenching we cannot be clenching you cannot be clenching they cannot be clenching
Perfect
I cannot have clenched you cannot have clenched he cannot have clenched we cannot have clenched you cannot have clenched they cannot have clenched
Perfect en V-ing
I cannot have been clenching you cannot have been clenching he cannot have been clenching we cannot have been clenching you cannot have been clenching they cannot have been clenching
Forme interrogative
Forme simple
can I clench? can you clench? can he clench? can we clench? can you clench? can they clench?
Forme en V-ing
can I be clenching? can you be clenching? can he be clenching? can we be clenching? can you be clenching? can they be clenching?
Perfect
can I have clenched? can you have clenched? can he have clenched? can we have clenched? can you have clenched? can they have clenched?
Perfect en V-ing
can I have been clenching? can you have been clenching? can he have been clenching? can we have been clenching? can you have been clenching? can they have been clenching?
Forme interro-négative
Forme simple
can I not clench? can you not clench? can he not clench? can we not clench? can you not clench? can they not clench?
Forme en V-ing
can I not be clenching? can you not be clenching? can he not be clenching? can we not be clenching? can you not be clenching? can they not be clenching?
Perfect
can I not have clenched? can you not have clenched? can he not have clenched? can we not have clenched? can you not have clenched? can they not have clenched?
Perfect en V-ing
can I not have been clenching? can you not have been clenching? can he not have been clenching? can we not have been clenching? can you not have been clenching? can they not have been clenching?