I could puncture you could puncture she could puncture we could puncture you could puncture they could puncture
Forme en V-ing
I could be puncturing you could be puncturing she could be puncturing we could be puncturing you could be puncturing they could be puncturing
Perfect
I could have punctured you could have punctured she could have punctured we could have punctured you could have punctured they could have punctured
Perfect en V-ing
I could have been puncturing you could have been puncturing she could have been puncturing we could have been puncturing you could have been puncturing they could have been puncturing
Négation
Forme simple
I could not puncture you could not puncture she could not puncture we could not puncture you could not puncture they could not puncture
Forme en V-ing
I could not be puncturing you could not be puncturing she could not be puncturing we could not be puncturing you could not be puncturing they could not be puncturing
Perfect
I could not have punctured you could not have punctured she could not have punctured we could not have punctured you could not have punctured they could not have punctured
Perfect en V-ing
I could not have been puncturing you could not have been puncturing she could not have been puncturing we could not have been puncturing you could not have been puncturing they could not have been puncturing
Forme interrogative
Forme simple
could I puncture? could you puncture? could she puncture? could we puncture? could you puncture? could they puncture?
Forme en V-ing
could I be puncturing? could you be puncturing? could she be puncturing? could we be puncturing? could you be puncturing? could they be puncturing?
Perfect
could I have punctured? could you have punctured? could she have punctured? could we have punctured? could you have punctured? could they have punctured?
Perfect en V-ing
could I have been puncturing? could you have been puncturing? could she have been puncturing? could we have been puncturing? could you have been puncturing? could they have been puncturing?
Forme interro-négative
Forme simple
could I not puncture? could you not puncture? could she not puncture? could we not puncture? could you not puncture? could they not puncture?
Forme en V-ing
could I not be puncturing? could you not be puncturing? could she not be puncturing? could we not be puncturing? could you not be puncturing? could they not be puncturing?
Perfect
could I not have punctured? could you not have punctured? could she not have punctured? could we not have punctured? could you not have punctured? could they not have punctured?
Perfect en V-ing
could I not have been puncturing? could you not have been puncturing? could she not have been puncturing? could we not have been puncturing? could you not have been puncturing? could they not have been puncturing?