I could climb you could climb he could climb we could climb you could climb they could climb
Forme en V-ing
I could be climbing you could be climbing he could be climbing we could be climbing you could be climbing they could be climbing
Perfect
I could have climbed you could have climbed he could have climbed we could have climbed you could have climbed they could have climbed
Perfect en V-ing
I could have been climbing you could have been climbing he could have been climbing we could have been climbing you could have been climbing they could have been climbing
Négation
Forme simple
I could not climb you could not climb he could not climb we could not climb you could not climb they could not climb
Forme en V-ing
I could not be climbing you could not be climbing he could not be climbing we could not be climbing you could not be climbing they could not be climbing
Perfect
I could not have climbed you could not have climbed he could not have climbed we could not have climbed you could not have climbed they could not have climbed
Perfect en V-ing
I could not have been climbing you could not have been climbing he could not have been climbing we could not have been climbing you could not have been climbing they could not have been climbing
Forme interrogative
Forme simple
could I climb? could you climb? could he climb? could we climb? could you climb? could they climb?
Forme en V-ing
could I be climbing? could you be climbing? could he be climbing? could we be climbing? could you be climbing? could they be climbing?
Perfect
could I have climbed? could you have climbed? could he have climbed? could we have climbed? could you have climbed? could they have climbed?
Perfect en V-ing
could I have been climbing? could you have been climbing? could he have been climbing? could we have been climbing? could you have been climbing? could they have been climbing?
Forme interro-négative
Forme simple
could I not climb? could you not climb? could he not climb? could we not climb? could you not climb? could they not climb?
Forme en V-ing
could I not be climbing? could you not be climbing? could he not be climbing? could we not be climbing? could you not be climbing? could they not be climbing?
Perfect
could I not have climbed? could you not have climbed? could he not have climbed? could we not have climbed? could you not have climbed? could they not have climbed?
Perfect en V-ing
could I not have been climbing? could you not have been climbing? could he not have been climbing? could we not have been climbing? could you not have been climbing? could they not have been climbing?