I could designate you could designate he could designate we could designate you could designate they could designate
Forme en V-ing
I could be designating you could be designating he could be designating we could be designating you could be designating they could be designating
Perfect
I could have designated you could have designated he could have designated we could have designated you could have designated they could have designated
Perfect en V-ing
I could have been designating you could have been designating he could have been designating we could have been designating you could have been designating they could have been designating
Négation
Forme simple
I couldn't designate you couldn't designate he couldn't designate we couldn't designate you couldn't designate they couldn't designate
Forme en V-ing
I couldn't be designating you couldn't be designating he couldn't be designating we couldn't be designating you couldn't be designating they couldn't be designating
Perfect
I couldn't have designated you couldn't have designated he couldn't have designated we couldn't have designated you couldn't have designated they couldn't have designated
Perfect en V-ing
I couldn't have been designating you couldn't have been designating he couldn't have been designating we couldn't have been designating you couldn't have been designating they couldn't have been designating
Forme interrogative
Forme simple
could I designate? could you designate? could he designate? could we designate? could you designate? could they designate?
Forme en V-ing
could I be designating? could you be designating? could he be designating? could we be designating? could you be designating? could they be designating?
Perfect
could I have designated? could you have designated? could he have designated? could we have designated? could you have designated? could they have designated?
Perfect en V-ing
could I have been designating? could you have been designating? could he have been designating? could we have been designating? could you have been designating? could they have been designating?
Forme interro-négative
Forme simple
couldn't I designate? couldn't you designate? couldn't he designate? couldn't we designate? couldn't you designate? couldn't they designate?
Forme en V-ing
couldn't I be designating? couldn't you be designating? couldn't he be designating? couldn't we be designating? couldn't you be designating? couldn't they be designating?
Perfect
couldn't I have designated? couldn't you have designated? couldn't he have designated? couldn't we have designated? couldn't you have designated? couldn't they have designated?
Perfect en V-ing
couldn't I have been designating? couldn't you have been designating? couldn't he have been designating? couldn't we have been designating? couldn't you have been designating? couldn't they have been designating?