I could green you could green she could green we could green you could green they could green
Forme en V-ing
I could be greening you could be greening she could be greening we could be greening you could be greening they could be greening
Perfect
I could have greened you could have greened she could have greened we could have greened you could have greened they could have greened
Perfect en V-ing
I could have been greening you could have been greening she could have been greening we could have been greening you could have been greening they could have been greening
Négation
Forme simple
I could not green you could not green she could not green we could not green you could not green they could not green
Forme en V-ing
I could not be greening you could not be greening she could not be greening we could not be greening you could not be greening they could not be greening
Perfect
I could not have greened you could not have greened she could not have greened we could not have greened you could not have greened they could not have greened
Perfect en V-ing
I could not have been greening you could not have been greening she could not have been greening we could not have been greening you could not have been greening they could not have been greening
Forme interrogative
Forme simple
could I green? could you green? could she green? could we green? could you green? could they green?
Forme en V-ing
could I be greening? could you be greening? could she be greening? could we be greening? could you be greening? could they be greening?
Perfect
could I have greened? could you have greened? could she have greened? could we have greened? could you have greened? could they have greened?
Perfect en V-ing
could I have been greening? could you have been greening? could she have been greening? could we have been greening? could you have been greening? could they have been greening?
Forme interro-négative
Forme simple
could I not green? could you not green? could she not green? could we not green? could you not green? could they not green?
Forme en V-ing
could I not be greening? could you not be greening? could she not be greening? could we not be greening? could you not be greening? could they not be greening?
Perfect
could I not have greened? could you not have greened? could she not have greened? could we not have greened? could you not have greened? could they not have greened?
Perfect en V-ing
could I not have been greening? could you not have been greening? could she not have been greening? could we not have been greening? could you not have been greening? could they not have been greening?