I could express you could express he could express we could express you could express they could express
Forme en V-ing
I could be expressing you could be expressing he could be expressing we could be expressing you could be expressing they could be expressing
Perfect
I could have expressed you could have expressed he could have expressed we could have expressed you could have expressed they could have expressed
Perfect en V-ing
I could have been expressing you could have been expressing he could have been expressing we could have been expressing you could have been expressing they could have been expressing
Négation
Forme simple
I could not express you could not express he could not express we could not express you could not express they could not express
Forme en V-ing
I could not be expressing you could not be expressing he could not be expressing we could not be expressing you could not be expressing they could not be expressing
Perfect
I could not have expressed you could not have expressed he could not have expressed we could not have expressed you could not have expressed they could not have expressed
Perfect en V-ing
I could not have been expressing you could not have been expressing he could not have been expressing we could not have been expressing you could not have been expressing they could not have been expressing
Forme interrogative
Forme simple
could I express? could you express? could he express? could we express? could you express? could they express?
Forme en V-ing
could I be expressing? could you be expressing? could he be expressing? could we be expressing? could you be expressing? could they be expressing?
Perfect
could I have expressed? could you have expressed? could he have expressed? could we have expressed? could you have expressed? could they have expressed?
Perfect en V-ing
could I have been expressing? could you have been expressing? could he have been expressing? could we have been expressing? could you have been expressing? could they have been expressing?
Forme interro-négative
Forme simple
could I not express? could you not express? could he not express? could we not express? could you not express? could they not express?
Forme en V-ing
could I not be expressing? could you not be expressing? could he not be expressing? could we not be expressing? could you not be expressing? could they not be expressing?
Perfect
could I not have expressed? could you not have expressed? could he not have expressed? could we not have expressed? could you not have expressed? could they not have expressed?
Perfect en V-ing
could I not have been expressing? could you not have been expressing? could he not have been expressing? could we not have been expressing? could you not have been expressing? could they not have been expressing?