I could counter you could counter she could counter we could counter you could counter they could counter
Forme en V-ing
I could be countering you could be countering she could be countering we could be countering you could be countering they could be countering
Perfect
I could have countered you could have countered she could have countered we could have countered you could have countered they could have countered
Perfect en V-ing
I could have been countering you could have been countering she could have been countering we could have been countering you could have been countering they could have been countering
Négation
Forme simple
I could not counter you could not counter she could not counter we could not counter you could not counter they could not counter
Forme en V-ing
I could not be countering you could not be countering she could not be countering we could not be countering you could not be countering they could not be countering
Perfect
I could not have countered you could not have countered she could not have countered we could not have countered you could not have countered they could not have countered
Perfect en V-ing
I could not have been countering you could not have been countering she could not have been countering we could not have been countering you could not have been countering they could not have been countering
Forme interrogative
Forme simple
could I counter? could you counter? could she counter? could we counter? could you counter? could they counter?
Forme en V-ing
could I be countering? could you be countering? could she be countering? could we be countering? could you be countering? could they be countering?
Perfect
could I have countered? could you have countered? could she have countered? could we have countered? could you have countered? could they have countered?
Perfect en V-ing
could I have been countering? could you have been countering? could she have been countering? could we have been countering? could you have been countering? could they have been countering?
Forme interro-négative
Forme simple
could I not counter? could you not counter? could she not counter? could we not counter? could you not counter? could they not counter?
Forme en V-ing
could I not be countering? could you not be countering? could she not be countering? could we not be countering? could you not be countering? could they not be countering?
Perfect
could I not have countered? could you not have countered? could she not have countered? could we not have countered? could you not have countered? could they not have countered?
Perfect en V-ing
could I not have been countering? could you not have been countering? could she not have been countering? could we not have been countering? could you not have been countering? could they not have been countering?